HOW TO FIX THE CAMERA

Most camera mounting screws are the same standard as tripod screws.

This standard is commonly referred to as “camera thread” or “tripod thread.”

There are very few differences between different manufacturers and camera types.

The commonly used screw size is 1/4 20UNC.

The same applies to single-lens reflex cameras, small digital cameras, surveillance cameras, and F.A.A.

The mounting screws shown in the photo below are all the same size as well.

 

 

1/4-20UNC

 

However, although there are a small number of large and old cameras, 3/8-16UNC (3/8 inch coarse) screws may be used. In this case, the screw diameter is approximately 9mm.

Of course, you can use screws to secure the camera, but there are a variety of fixing devices available on the general market.

These fixtures come with a variety of features, including adjustable angles. Therefore, one option is to use ready-made products.

Since standard screws for cameras are used, commercially available camera accessories (tripods, pan heads, etc.) can be used. There are also conversion screws from 1/4 inch to 3/8 inch on the market, so you can use a tripod or other fixture even if the screw size is different.

 

三脚等の固定具 三脚等の固定具

・Example of consumer product camera fixtures
The following is part of LPL Co., Ltd.’s catalog.

民生品のカメラ固定具

民生品のカメラ固定具

・Example of industrial camera fixture
The following is part of SFC Co., Ltd.’s catalog.

産業用のカメラ固定具

 

It may also support the lens if it is long and heavy.

(All of our microscope lenses have a fixed part with a diameter of 50 mm.)

 

レンズ側をホールド

 

レンズ側をホールド  

 

HOW TO STORE CAMERAS AND LENSES

Cameras and lenses don’t have to be left everywhere, they need to be stored properly and correctly.
If it is not stored correctly, it may cause problems such as dust contamination and mold formation.
In this article, we will introduce how to store cameras and lenses.

 

● Precautions for storing cameras and lenses

One thing to keep in mind when storing cameras and lenses is dust and moisture.

If dust gets into the lens or camera sensor, it cannot be easily removed and may have an unwanted effect when shooting.

In addition, moisture can cause the lens to fog up and mold to grow.

If dust gets inside the camera or lens, or mold occurs, the only way to prevent mold is to disassemble and clean it, so it is important to prevent mold from forming.

In addition, cleaning the camera and lens (removing dust and mold) is not covered by the manufacturer’s warranty. If you ask for repairs, it will cost you a reasonable amount.

(The warranty is applied immediately after purchase, but not in the case of repairs.) )

Therefore, care must be taken to store it from dust and moisture.

 

● What is the best storage method?

The inside of cupboards, drawers, and desks are places where dust and mold are likely to form. The same is true even if you have it in your camera bag. In general, the humidity suitable for storing cameras and lenses is about 40-50%. If the humidity exceeds 60%, mold is likely to grow, and conversely, an environment with extremely low humidity is also undesirable.

Therefore, it is important to maintain the right humidity.

You should also pay attention to temperature differences, as sudden changes in temperature can cause condensation.

① Prepare a case to store your camera and lenses

 

First, prepare a case (storage container) to store your camera and lenses.

By placing it in the case, it prevents dust from entering, and by sealing it, it prevents moisture from entering.

Some common types of cases include:

~ Dry box (moisture-proof cabinet) ~

 

This is a dedicated moisture-proof storage room for storing cameras and optical equipment.

There are various types from small to large cabinet types.

It can maintain a constant humidity at all times, so you can store it with peace of mind. It is sealed and protects against moisture and dust.

 

防湿保管庫  Moisture-proof storage manufacturer Toyo Living Co., Ltd.’s HP

 

~Simple dry box or sealed container~

 

 Simple dry box is easy and popular.

It is a sealed moisture-proof case provided by camera accessory manufacturers, etc., and it is possible to control humidity by putting a desiccant inside and placing a simple hygrometer.

It is easy to use because even beginners can easily store cameras and lenses. Recently, it is also possible to substitute airtight containers for food with rubber seals on the lid, which are available at 100 yen shops and home centers.

It is cost-effective and protects against moisture and dust, but requires regular humidity checks and desiccant replacement.

 

簡易ドライボックス  

 

② Prepare the desiccant

 

Simple dry boxes and airtight containers for food should be filled with desiccant to reduce humidity.

You can also substitute a commercially available desiccant for dry boxes or silica gel for food.

Be sure to include a desiccant and a hygrometer to check the humidity.

 

シリカゲル

 

 

③ Clean thoroughly before storage

 

Cameras and lenses that have been used may have dust on them.

Properly clean it before storing.

It doesn’t make sense to bring dirt in when storing cameras and lenses in an enclosed space.

④ Cleaning and cleaning of cameras and lenses

 

Use a blower provided by a camera accessory manufacturer to blow away dust and fine particles from the camera and lens.

Carefully wipe off dirt and oil on the surface with a cleaning cloth.

Sweat and oil on your hands can lead to mold growth, so wipe them off thoroughly.

It is a question of whether or not to remove the lens from the camera when storing it, but it is okay to store it with the lens attached.

Rather, by reducing the number of times the lens is attached and detached, the risk of dust contamination can be reduced.

However, if you are going to remove the lens, it is important to attach the cap to the camera’s lens mount and store it.

 

● Temporary storage of cameras and lenses

Care must be taken when temporarily replacing the lens. Even if you can’t see it, there is dirt, dust, and dust floating in the air.

Even at home, you can see that dust accumulates on shelves.

When replacing lenses, the risk of dust and debris entering increases.

Therefore, you need to be very careful about how you place your camera and lenses.

 

カメラ、レンズの一時保管 The camera sensor is bare and facing the top, and dust falls on the sensor inside the camera.  
カメラ、レンズの一時保管   The C-mount part of the lens is exposed and facing the top, and dust falls on the lens.
カメラ、レンズの一時保管 The side of the lens object is bare and facing the top, and dust falls on the lens.

 

When you buy a camera or lens, it may come with a cap (lid).

Installing the cap as soon as possible reduces the risk of dust contamination.

When changing the lens, it may be temporarily placed on the desk, but care must be taken when doing so.

Make sure that the surface of the sensor or lens is not facing up, and that it is placed sideways to prevent dust from adhering to it.

 

カメラ、レンズの一時保管

 Even if the camera sensor is placed sideways, there is still a danger. Therefore, it is advisable to install the cap as soon as possible. 

カメラ、レンズの一時保管 

 Even if the surface of the lens is placed sideways, there is still a risk. Therefore, it is desirable to install the cap as soon as possible.

   
カメラ、レンズの一時保管 

 Attach caps to both ends of the lens and attach caps to the camera body.

● Summary of how to store cameras and lenses

・The camera and lens are sensitive to dust and moisture.

・If dust or mold gets into the camera or lens, it will be difficult to remove.  Therefore, it is important to store it in an environment where dust and mold do not form.

・To prevent dust and mold from forming, store it in a special case.

・Before storing, take good care of the camera and lens and do not bring in dust, dirt, or grease.

・There is no problem even if the lens is attached.

・Caution must be taken when temporarily storing or replacing lenses.

HOW TO INCREASE THE MAGNIFICATION OF A VIDEO WITHOUT CHANGING THE FOCAL LENGTH

When using a USB camera, there is also a software option to apply digital zoom, but this may come at the expense of resolution.

For example, if you use a 2 million pixel camera at full resolution, the resolution will be 1600×1200.

 

 

 

The resolution is 800 x 600 = 480,000 pixels. If the magnification is 2x, the resolution will be 1/4, and if it is 3x, it will be 1/9.

Even in the case of 5 million pixels, it will be 1.25 million pixels with 2x digital zoom and 550,000 pixels with 3x.

Optical zoom, on the other hand, allows you to increase the magnification without sacrificing resolution (although it actually drops slightly).

Even if the lens does not have the ability to increase the focal length, you can easily increase the magnification by using a component called a rear converter. In addition, when using a rear converter, there is no need to change the installation position of the camera, since the focal length and other factors do not change.

 

2倍のリアコンバータ

   

 

4 DIVISIONAL 80-LAMP LED RING LIGHTING LED-80T

Dimmable even when lighting independently in 4 parts!
With a removable diffuser plate!

● Inner diameter φ70mm, tip inner diameter φ60mm, outer φ96mm

● 4 divisions can be lit independently

● Dimmable even when lighting independently in 4 divisions

● Diffuser plate can be removed

● Can be attached to microscopes, microscopes,…

HOW TO EASILY MAKE AN ORIGINAL CAMERA STAND

Below are the upper and lower limit adjustment stays for our camera stands.

 

The adjustment stay of our camera stand has the following structure.

   

 

 

 

 

27mm pitch
Fixed with two M4 screws.
Remove this part and attach the original fixture to the tip to make the original adjustment stay.

   
The following is a lens that we manufactured according to the customer’s lens size.
We can also accommodate such requests.
   
 The tip is fixed with a 27mm pitch M3 screw.

 

CAMERA STAND FOR USE IN THE FIELD

1.Magnetic stand with thick articulated arm

 

現場で使えるカメラスタンド

 

 

2.Compact camera base with 3D arm 

A 5.5Kg base is attached to a post and horizontal bar.
The base acts as a weight, so the horizontal bar is stable even if it is long.

 

現場で使えるカメラスタンド

 

3.Edge-fixed camera stand with 3D arm

Horizontal bars on edge-fixed posts

 

現場で使えるカメラスタンド

 

4.Articulated arm with fixed edge

 

現場で使えるカメラスタンド

 

FIELD OF VIEW WHEN CHANGING THE IMAGE SIZE

When using a lens with the same magnification, the smaller the number of inches in the image size, the larger the magnification and the narrower the field of view.

Take a look at the pictures below.

 

The lens, monitor, and focal length are taken under the same conditions.

 

1/2 inch camera
1/2.5 inch camera
1/3 inch camera

You can see that the 1/3 inch camera has a narrower field of view than the 1/2 inch camera.

Also, when selecting a lens, it is necessary to check the compatible image sensor size of the camera.

Please note that if you select a lens that is smaller than the camera’s compatible image sensor size, a phenomenon called vignetting may occur.

You can see black areas (vignetting) in the four corners of the screen.

We can also help you with the selection of lenses and cameras. For more information, please contact Technical Support.

SONY CMOS SENSOR IMX183

SONY CMOS sensor IMX183

 

The IMX183 has a pixel size of 2.4×2.4 μm and is a rolling shutter sensor.

The pixel size is as small as 2.4 μm and the sensor size is 1 inch. SONY’s unique back-illuminated technology achieves excellent image quality with high sensitivity, making it ideal for building optical systems.

SONY CMOS Sensor IMX183 specifications

Number of pixels: 20 million pixels (resolution 5472×3648)

Pixel size: 2.4μm×2.4μm

Sensor Size: 1 inch

Shutter method: Rolling shutter

 

USB3 Vision Camera (USB3.0, 20 million pixels, color) CS2000-C

IMX183

USB3 Vision Camera (USB3.0, 20 million pixels, monochrome) CS2000-B

IMX183
   

1-inch GigE camera (20 million pixels, color) EG2000-C

IMX183

1-inch GigE camera (20 million pixels, monochrome) EG2000-B

IMX183

SONY CMOS SENSOR IMX226 

SONY CMOS sensor IMX226 

The IMX226 has a pixel size of 1.85×1.85 μm and uses a rolling shutter method.

SONY’s Pregius series is characterized by high sensitivity and low noise performance. The sensor is 1/1.7″ in size and is available with standard and affordable 2/3″ C-mount lenses.

SONY CMOS sensor IMX226 specifications

 

Number of pixels: 12 million pixels (resolution 4000×3036)

Pixel size: 1.85μm×1.85μm

Sensor size: 1/1.7 inch

Shutter method: Rolling shutter

 

 

USB3 Vision Camera (USB3.0, 12 million pixels, color) CS1200-C

IMX226

USB3 Vision Camera (USB3.0, 12 million pixels, monochrome) CS1200-B

IMX226
   

GigE camera (12 million pixels, color) EG1200-C

IMX226

GigE camera (12 million pixels, monochrome) EG1200-B

IMX226

SONY CMOS SENSOR IMX178

SONY CMOS sensor IMX178

The IMX178 is a rolling shutter sensor with a pixel size of 2.4×2.4 μm.

SONY’s Starvis series supports high sensitivity even in low-light environments by increasing the gain. The sensor has a resolution of 6 million pixels, a size of 1/1.8 inch, and a wide dynamic range, making it suitable for a variety of applications.

 

SONY CMOS sensor IMX178 specifications

Number of pixels: 6 million pixels (resolution 3072 x 2048)

Pixel size: 2.4×2.4µm

Sensor size: 1/1.8 inch

Shutter method: Rolling shutter method

 

 

 

GigEカメラ(600万画素・カラー)EG600U-C  

GigE camera (6 million pixels, color)

EG600U-C

 

 

 

 

GigEカメラ(600万画素・モノクロ) EG600U-B  

GigE camera (6 million pixels, monochrome)

EG600U-B

 

 

SONY CMOS SENSOR IMX264

SONY CMOS sensor IMX264 

The IMX264 has a pixel size of 3.45×3.45 μm and the sensor uses a global shutter method. The Pregius series manufactured by SONY is characterized by high sensitivity and low noise performance. This sensor is 2/3 inch in size, has a wide dynamic range, and has a resolution of 5 million pixels, making it suitable for a variety of applications.

 

SONY CMOS sensor IMX264 specifications

 

Number of pixels: 5 million pixels (resolution: 2448 x 2048)

Pixel size: 3.45×3.45µm

Sensor size: 2/3 inch

Shutter method: Global shutter 

 

 

 

GigEカメラ(ソニー500万画素・カラー) EG501-C  

GigE camera (Sony 5 million pixels, color) EG501-C

 

 

 

 

 

GigEカメラ(ソニー500万画素・カラー) EG501-C  

GigE camera (Sony 5 million pixels, monochrome) EG500-B

 

 

 

 

 

 

LOW-COST LED RING LIGHTING GR10-N

At this price, it can be used overseas with double LED arrangement and light intensity increase 100 ~ 240V.

ABOUT INDUSTRIAL CAMERAS AND EXTERNAL TRIGGERS

■ What are the external trigger terminals for industrial cameras?

Many industrial cameras have external trigger terminals.

 

USB Camera DN Series USB Camera CS Series

 

This trigger pin is used to control the timing of still image shooting and video recording with a sensor or PLC (programmable logic controller).

 

Watch the video brief image below.

System Example Video

 

Of course, even if you don’t use an external trigger, you can use the included application software to save still images and record videos.

However, in actual production lines, it is common to shoot and record at the timing of the object to be photographed, and there are many situations where an external trigger terminal of an industrial camera is required.

Watch the video brief image below.

 

■ How to use the external trigger terminal?

When using external trigger terminals, there are various ways to use them depending on the customer’s production line.

In addition to simply saving still images and recording videos, it can be used for a variety of purposes, such as recording videos before and after a problem occurs, or shooting and recording with multiple cameras.

Therefore, when using an external trigger pin, it is basically assumed that the customer will program it himself.

Industrial cameras usually come with an SDK (Software Development Kit) for development, which is used to create programs.

 

 

■ Still image storage with external trigger

I mentioned that “basically create a program”, but if it is a simple function, application software can be used.

By using it, you can build a system without any knowledge of programming.

Among them, we will explain the most basic “saving still images with an external trigger”.

Even with the simple function of “saving one still image when an external trigger signal is input”, there are two main methods.

 

And the time display between the trigger and the next trigger is different.

(1) A still image taken with the latest trigger is displayed between the trigger and the next trigger.

・Saved images can be reliably checked in real time.

Even lines with movement can be visually checked using still images.

・When shooting with multiple cameras at the same time, it is possible to shoot perfectly in sync.

We offer the following software:

 

トリガーソフト トリガーソフト

Trigger Shooting Software

Hi TriggerF Light  

High-performance trigger shooting software

Hi TriggerF Pro 

 

 

(2) A method is adopted in which live video is displayed between the trigger and the next trigger.

・Since the live image is always displayed, it is possible to monitor the status of lines other than the object.

・When shooting with multiple cameras at the same time, multiple frames may be out of alignment.

We offer the following software:

トリガーソフト

Four-screen display shooting software

Hi TriggerQ 

 

 

■ Video recording with external triggers

 

In the case of video recording, there are the following two types.

(1) Use the start trigger and stop trigger as triggers

(2) Use only the start trigger as a trigger

 

In the case of (1), only a simple recording function is provided.

In the case of (2), various functions are available.

In addition to simply recording the specified time by timer control from the trigger, you can also record before and after the trigger (operation like a drive recorder). It is useful for event analysis when a problem occurs.

We offer video recording software that allows you to use both Start/Stop triggers, timers, etc.

トリガーソフト

Long-Duration Recording Software

Hi TriggerRec

 

 

Software to record video before and after the trigger

 

トリガーソフト

Facility monitoring drive recorder

Hi TriggerWatcher 

 

 

■ Software Development

 

Robots, conveyors, drones, AI-based automated inspections, etc., can be linked to external triggers to become independent automated equipment for the first time.

At Shodensha, we help with system development and software development using cameras.

 

CAMERA STAND FOR USE IN THE FIELD

1.Magnetic stand with thick articulated arm

 

現場で使えるカメラスタンド

 

2.Compact camera base with 3D arm 

A 5.5Kg base is attached to a post and horizontal bar.
The base acts as a weight, so the horizontal bar is stable even if it is long.

 

現場で使えるカメラスタンド

 

3.Edge-fixed camera stand with 3D arm

Horizontal bars on edge-fixed posts

 

現場で使えるカメラスタンド

 

4.Articulated arm with fixed edge

 

現場で使えるカメラスタンド

 

DIFFERENCES BETWEEN INDUSTRIAL CAMERAS AND WEBCAMS

Differences between C-mount industrial cameras and webcams

Industrial cameras are used for visual inspection and observation.
This section introduces the differences between C-mount industrial cameras (FA cameras) and web cameras.

 

Any of the following problems are bound to occur in human visual inspections and counts.

 

 

Webcam Features

When people hear the word “USB camera,” they tend to think of a web camera.
They are sold on the Internet and at mass retailers, and simply by connecting to a PC, an image is projected.
They are sold at very reasonable prices and are easy to obtain.

Areas where webcams are used

However, webcams are rarely employed in industrial or industrial settings.
The most likely reason is that the lens is not interchangeable.
A web camera basically has a built-in lens.
webカメラ
The camera and lens are included in a single case.
The price is very reasonable,  including the lens, but the disadvantage is that the lens is not interchangeable.
Just as cameras have pixel counts, lenses also have corresponding pixel counts.
Recently, cameras with high pixel counts are relatively inexpensive, but lenses are not.
Even if a web camera claims to have 5 megapixels, the lens probably has less than 1 megapixel.
Therefore, the image is not clear and blurred despite the high pixel count.
Basically, industrial cameras are divided into a camera body and a lens.

What is a useful industrial camera…

産業用USBカメラ
産業用レンズ
There are several standards for industrial cameras called C-mount, CS-mount, and S-mount.
Lenses that fit these mounts are separately prepared and mounted.
The ability to select lenses allows for a wide variety of options, such as the area to be projected and the distance the camera needs to be away from the object.
In addition, the number of pixels of the lens can be selected to match the number of pixels of the camera, resulting in a clearer image.

How to choose an industrial camera

Industrial cameras:
1.USB camera
2.GigE camera
3.UVC camera
4.HDTV
5.High-speed camera
There are various types, such as the following, to choose from depending on the application.
Industrial cameras are chosen in industrial and industrial settings because they offer a very high degree of freedom in terms of the images that are projected.

 

 

Shodensha’s Industrial USB Camera
産業用USBカメラ産業用USBカメラ産業用USBカメラ産業用USBカメラ

 

INDUSTRIAL CAMERA SELECTION

There are various types of industrial cameras such as USB cameras, GigE cameras, and Hi-Vision cameras.
In this issue, we will introduce the advantages and disadvantages of each connection method.

 

■USB camera

 

産業用USBカメラ

 
It can be connected to a PC via a USB port and used for a variety of applications.
It is the most standard industrial camera used in a variety of situations.
 
<Merits>
High versatility and easy connection.
Low cost.
Many applications (software) for USB cameras are available, so you can choose the application according to what you want.
High frame rate is possible by selecting USB3.0 type.
Wide lineup of cameras with different pixel counts.
 
<Demerits>
Short for cable.
Depends on PC specs.
 

 

■GigE Camera

 

GigEカメラ

 
The camera is connected to a PC using a LAN port, making it similar to a USB camera.
The use of a LAN cable ensures stable communication and long-distance connection.

 

 
<Merits>
 
Long cable lengths, 100 m for LAN, and even longer distances with optical fiber.
Communication is stable and noise-resistant.
Operable at a frame rate equivalent to USB 3.0.
 
<Demerits>
 
Need to provide a POE interface for connection.
Few applications are as versatile as USB cameras.
 

 

■HDMI Camera

 

HDMIカメラ

 
It can easily project images without the use of a PC.
It is specialized for monitoring and has excellent color reproduction of video images.

 

 
<Merits>
 
Directly connected to the monitor for easy use.
Some types of cameras are loaded with memory and come with a measurement function, allowing measurement without a PC.
High color reproducibility and frame rate make them ideal for monitoring such as inspections.
Some models have high camera sensitivity, so they can be combined with borescopes.
 
<Demerits>
 
If you want to add functions later, you need to buy new hardware.
External equipment may be required to save still images.
 

 

産業用カメラの選び方

 

 

Shodensha’s industrial camera

 

産業用USBカメラ
USB camera
GigEカメラ
GigE camera
計測機能付きハイビジョンカメラ
HDTV with measurement function
低価格ハイビジョンカメラ
Low-cost HDTV

SONY CMOS SENSOR IMX265

SONY CMOS sensor IMX265

 

The pixel size of this IMX265 is 3.45 x 3.45μm, and it is a global shutter type sensor.

Sony’s Pregius series is known for its high sensitivity and low noise.

The resolution is 3.2 million pixels and the sensor size is 1/1.8 inch, so there are many lens options. It can be said that this model has a good balance between image quality and frame rate (speed).

 

SONY CMOS sensor IMX265 specifications

 

Number of pixels: 3.2 million pixels (resolution: 2048 x 1536)

Pixel size: 3.45×3.45µm

Sensor size: 1/1.8 inch

Shutter method: Global shutter method

 

 

GigE camera (Sony 3.2 million pixels, color) EG320-C

IMX265

GigE camera (Sony 3.2 million pixels, monochrome) EG320-B

IMX265

SONY CMOS SENSOR IMX287

SONY CMOS sensor IMX287

 

The pixel size of this IMX287 is 6.9 x 6.9μm, and it is a global shutter type sensor.

SONY’s Pregius series is known as a high-speed sensor. If you are using the CCD sensor ICX618, as a transition to a CMOS sensor, this IMX287 has a similar pixel size and resolution, minimizing changes to peripherals such as lenses.

Furthermore, despite the low price, the sensor performance has been significantly improved.

SONY CMOS sensor IMX287 specifications

 

Number of pixels: 400,000 pixels (resolution 720 x 540)

Pixel size: 6.9×6.9μm

Sensor size: 1/2.9 inch

Shutter method: Global shutter method

 

 

USB3 Vision camera
(USB3.0, 400,000 pixels, color) CS41-C

IMX287

USB3 Vision camera
(USB3.0, 400,000 pixels, monochrome) CS41-B

IMX287
   

GigE camera (400,000 pixels, color) EG41-C

IMX287

GigE camera (400,000 pixels, monochrome) EG41-B

IMX287

USB2.0 CABLE EXTENSION

The USB2.0 standard usually recommends a length of up to 5m.

However, in reality, cables that exceed this length are sold by major manufacturers. (Generally speaking, it is said that there is no significant effect on communication speed up to about 10m).

In addition to simple extension cables, USB cables with repeater functionality are also available. These are also commonly referred to as active cables.

Multiple companies sell these products, but the product in the photo is Sanwa Supply Co., Ltd.’s KB-USB-R212 [12m extension USB active repeater cable].

12m延長USBアクティブリピーターケーブル

 

According to USB cable standards, the maximum connection distance between devices is usually 5 meters. However, by using this “USB cable with repeater function”, you can connect devices with a cable longer than 5m. The product in the photo can be extended up to 12m using this cable.

 

This cable has a built-in signal amplification correction circuit. This circuit compensates for signal attenuation and allows cable extension. This cable can be extended over 12m. In that case, wire as shown below.

信号増幅補正回路が内蔵

 

I tried connecting a 12m USB cable with repeater function (product in the photo) and the cable (1.8m) that came with the camera to our USB camera, and it worked without any problems. However, the instruction manual for the USB cable with repeater function (product in the photo) states, “To ensure stable operation and recognition, we recommend that the connected USB device be a self-powered device.” there was.

Of course, there are also active cables that use USB power (bus power). It is convenient and does not require a power supply, but if your PC’s power supply is weak, stability may be a problem.

Extending the USB cable will cause a voltage drop, so we recommend that you always check the operation when using devices that are powered by a PC (including our USB cameras).

HOW TO CHOOSE A COMPUTER WHEN USING MULTIPLE CAMERAS?

If you want to use multiple cameras, you need a high-performance PC. (The use of laptops is not guaranteed.) In general, as the resolution and number of cameras increase, so do the required specifications of the PC. The following are recommended specs, but this is a guide.

CPU: 12th generation or later Intel Core i7 (12th generation or later Intel Core i9 is recommended for 4 or more cameras)

RAM: 16 GB or more

 

If you’re recording for a long time, add the above specs to a GPU like the RTX 3070.

If you have more than 4 cameras, we recommend adding a USB board or a LAN board for GigE cameras to account for bandwidth limitations. To add a board, the required PCIe slot must be free.

Also, the amount of storage space you need depends on your camera’s resolution, fps, and recording time. The following is an estimate of the storage time that can be stored on each camera when using 1TB of storage.

 

1TB SSD

400,000 pixels 30fps Compression 160h
Non – compression 6h45min
1.3 million pixels 30fps Compression 48h
Non – compression 2h
5 million pixels 30fps Compression 11h
Non – compression 28min

 

 

※If there are 2 cameras, the time will be 1/2, and if there are 4 cameras, the time will be 1/4. When performing compressed recording, it may be possible to secure sufficient writing speed with an HDD depending on the number of cameras and fps.

 

 

WHAT IS “SYNCHRONOUS RECORDING” WHEN SHOOTING VIDEO WITH MULTIPLE CAMERAS?

When recording with multiple cameras at the same time, there may be a deviation of several frames between cameras due to factors such as camera clock and component deviations, aging, and the ambient temperature at which they are used.

Due to the complex interplay of these factors, it is difficult to give a specific amount of deviation, but as a general guideline, if you record for more than 8 hours, there may be a deviation of about 1 to 2 seconds.

Synchronous recording is a method that completely eliminates the above deviations and makes recordings without deviations. Synchronous recording uses not only a camera, but also a synchronous signal generator.

Multiple cameras are fed into the signal from the synchronous signal generator at exactly the same time, and only the frame at the time when the signal is entered is recorded, resulting in perfectly synchronized recording and not being affected by the camera clock or environment.

Multi-unit video recording software 
Evidence: Rec4 / Rec8

Software that allows “multiple cameras” to record “simultaneously” is ideal for creating evidence and evidence of problems that arise in the field.

同期録画

Fully synchronized recording set for USB/GigE cameras with multiple units (long-term recording software)
HiTriggerSyncRec2

Software that enables “fully simultaneous and synchronous recording” with “multiple cameras” is also available.

同期録画

USB/GigE Camera Fully Simultaneous and Synchronized Facility Monitoring Drive Recorder
HiTriggerSyncWatcher2 

Software that enables “fully simultaneous and synchronous recording” with “multiple cameras” is also available.

 

HOW TO ATTACH A SMALL S-MOUNT LENS TO A C-MOUNT/CS-MOUNT CAMERA?

Due to space constraints, it may be necessary to configure the camera and lens in a compact manner.

In such cases, compactness can be achieved by choosing an S-mount lens that is smaller than a C-mount or CS-mount lens.

 

Sマウント Cマウント

 

In order to use S-mount lenses, you need to attach a conversion adapter to the camera.

 

Sマウント Cマウント

 

However, there is a caveat.

With S-mount lenses, the focus is adjusted depending on how well it is inserted into the camera.

Cameras usually have an infrared cut filter or a protective filter in front of the sensor.

In some cameras, the distance between the filter and the lens mount is close, and the lens may interfere with the filter when focusing, resulting in a lack of focus.

 

 

 

It is necessary to actually try and check whether the S-mount lens can be attached and used with the camera.

 

CAMERA IMAGE SIZE (IMAGE SENSOR SIZE)

How to use the image sensor size?

When using the same lens, the smaller the size of the image sensor, the narrower the field of view. In addition, the size of the image sensor is a necessary factor in the calculation of the field of view and the selection of the lens. (More on this later.) 

The size of a single pixel can also be calculated from the size of the image sensor

For example, if the image sensor size of 1.3 million pixels (1280 dots × 1024 dots) is 1/2.5 inch, the horizontal orientation is 5.6 mm and the vertical direction is 4.2 mm.

In this case

Horizontal 5.6mm/1280dot=0.0044mm/dot

Vertical direction is 4.2 mm/1024 dot = 0.0041 mm/dot.

 

 

Meaning of image sensor size

 

Usually, when we say size on a monitor, we are referring to the length of the diagonal.

However, the size of the image sensor is not the length of the diagonal.

For example, in the 1/2.5-inch image sensor with 1.3 million pixels mentioned earlier, the horizontal direction is fixed at 5.6 mm and the vertical direction is fixed at 4.2 mm.

If we calculate from this figure, then the diagonal length will be 7 mm. But the actual diagonal length of 1/2.5 inch is 10.16mm.

This is due to the influence of the size notation of the diameter of the imaging tube in the era when vacuum tubes were used in the past, and the image sensor is also matched to the size of the imaging tube, and that notation remains as it is.

 

 

Actual image sensor size

4:3 horizontal and vertical image sensor

 

水平、垂直が 4:3の撮像素子

 

19:6 horizontal and vertical image sensor

 

水平、垂直が 16:9の素子サイズ

 

 

Actual use of image sensor size

When choosing a lens or calculating the distance to an object, the size of the image sensor is required.

 

 

(1) In the case of a CCTV lens (fixed focal length lens)

 

The following factors are required to calculate the required lens based on the size of the object: the size of the camera’s image sensor and the distance to the object (W.D.).

 
CCCTVレンズ(固定焦点レンズ)の場合

 

 

For example, if the distance to the object is 1 meter and the vertical field of view is 300 mm, what focal length lens should you choose? (Let’s assume we use a 1/2 inch camera).

The image sensor size of a 1/2 inch camera is as follows.

 
1/2インチカメラの撮像素子サイズ

 

 

Focal length (f) = (distance to object (mm) x vertical size of image sensor (mm)) / vertical field of view = (1000mm x 4.8mm) / 300mm = 16mm

Therefore, choosing a lens with a focal length of 16mm will ensure the desired vertical field of view. Horizontal field of view can be calculated similarly.

Note that once you know the vertical or horizontal field of view, you can easily calculate the other field of view. A square image sensor has an aspect ratio of 4:3, so in the above case, the horizontal field of view is 300mm x 4/3 = 400mm.

 

(2)For macro lenses

 

Lenses that magnify objects often have a fixed focal length.

In this case, the characteristics of the lens cannot be expressed by the focal length (f value).

In the case of microlenses, performance is expressed in terms of optical magnification.

 

With a lens with an optical magnification of 1x, the field of view you want to observe matches the size of the image sensor.

For example, the size of a 1/3 inch image sensor is 4.8 mm x 3.6 mm, and the size of a 1/2 inch image sensor is 6.4 mm x 4.8 mm. We would appreciate it if you could check the specifications of our macro lenses based on this information.

マクロレンズ
 

The size of the image sensor is also used to calculate the total magnification (the final magnification displayed on the monitor) when using a macro lens.

For details, see “How to consider the magnification of a microscope.”

<List of industrial cameras to choose from based on image sensor size>

  USB camera CS series USB camera DN series GigE camera
1/1.1 inch

CS1200-GC (12 million pixels, color)/

CS1200-GB (12 million pixels, monochrome)

 

EG1200-GC (12 million pixels, color)/

EG1200-GB (12 million pixels, monochrome)

1/1.7 inch

CS1200-C (12 million pixels, color)/

CS1200-B (12 million pixels, monochrome)

 

EG1200-C (12 million pixels, color)/

EG1200-B (12 million pixels, monochrome)

1/1.8 inch  

DN3RG-130 (1.3 million pixels, color)/
DN3RG-130BU (1.3 million pixels, monochrome)

DN3RG-200 (2 million pixels, color)/
DN3RG-200BU (2 million pixels, monochrome)

EG320-C (3.2 million pixels, color)/

EG320-B (3.2 million pixels, monochrome)

EG600U-C (6 million pixels, color)/

EG600U-B (6 million pixels, monochrome)

1/2.3 inch   DN3R-1000 (10 million pixels, color)  
1/2.5 inch CS500-C (5 million pixels, color)/
CS500-B (5 million pixels, monochrome)
DN3R-500 (5 million pixels, color)  
1/2.9 inch

CS41-C (400,000 pixels, color)/

CS41-B (400,000 pixels, monochrome)

 

EG41-C (400,000 pixels, color)/

EG41-B (400,000 pixels, monochrome)

1/2 inch

CS130U-C (1.3 million pixels, color)/

CS130U-B (1.3 million pixels, monochrome)

CS500U-GC (5 million pixels, color)/

CS500U-GB (5 million pixels, monochrome)

 

EG130U-C (1.3 million pixels, color)/

EG130-B (1.3 million pixels, monochrome)

1 inch

CS2000-C (20 million pixels, color)/

CS2000-B (20 million pixels, monochrome)

 

EG2000-C (20 million pixels, color)/

EG2000-B (20 million pixels, monochrome)

2/3 inch    

EG501-C (5 million pixels, color)/

EG500-B (5 million pixels, monochrome)

 

 

Summary

The size of the image sensor is information necessary for calculating the field of view and selecting a lens. For CCTV lenses, use the following formula when calculating the lens for the desired vertical field of view:

f value = (distance to object (mm) x vertical size of image sensor (mm)) / vertical field of view

For macro lenses, the size of the image sensor is used to calculate the total magnification that will ultimately be displayed on the monitor.

WHAT IS THE FLICKER PHENOMENON?

The “flicker phenomenon” refers to a phenomenon in which abnormalities such as “light and dark fluctuations” and “color tone shifts” appear in images captured by a camera, although they cannot be detected with the naked eye.

In this article, we will introduce “What is the Flicker Phenomenon” and “How to Mitigate the Flicker Phenomenon”.

 

The flicker phenomenon is

Some lighting devices flash to match the power frequency, while others pulse as a dimming system.

Although the flashing of light cannot be felt with the naked eye, if the shutter speed of the camera is faster than the blinking cycle, abnormalities such as “light and dark fluctuations” and “color tone shifts” will occur in the captured image. This is the flicker phenomenon.

The flicker phenomenon occurs under lighting such as fluorescent lamps that emit periodic light, and does not occur under direct current lighting.

There are two main symptoms of flicker.

In a camera with a global shutter system, the entire image periodically repeats fluctuations in brightness.

On the other hand, with a rolling shutter camera, horizontal stripes may appear in the footage, which may appear to flow vertically.

 

< Flicker Phenomenon: Horizontal Stripes of Light and Dark in Rolling Shutter Cameras>

フリッカー現象

 

How to prevent flicker phenomenon

Basically, there are only three ways.

1. Use a direct current lighting system.

2. Set the shutter speed to be slower than the blinking speed.

3. Use a camera equipped with a “flicker-free function”.

 

1. Use a direct current lighting device.

It occurs under lighting that repeatedly emits periodic light, and does not occur in lighting with direct current lighting.

 

2. Set the shutter speed to be slower than the blinking speed.

The flicker phenomenon can be suppressed to some extent by adjusting the camera’s exposure time or shutter speed, but it cannot be completely eliminated. Even if the flicker seems to disappear, the light and dark are changing over a long period of tens of seconds or more. Especially when using a high-speed camera under fluorescent lighting, a significant flicker phenomenon occurs.

 

※ If the shutter speed cannot be adjusted on the camera side, the aperture of the lens can be adjusted to compensate for the lack of illumination with DC lighting to reduce the effect of pulse lighting relatively.

 

3. Use a camera equipped with a “flicker-free function”.

The “flicker-free function” is a function in which the camera automatically detects the flashing of the light source and releases the shutter at a timing that has little effect on the brightness and color tone.

To avoid the flicker phenomenon, use direct current lighting or strobe lighting synchronized with the camera shutter for high-speed camera lighting.

We offer a wide range of high-speed cameras and lighting equipment suitable for those applications, such as high-speed camera lighting and strobe lighting.

If you are suffering from the flicker phenomenon, please feel free to contact us.

 

CHU30  

Low-cost high-speed camera

(Color/ Monochrome)

CHU30-C-RS / CHU30-B-RS

 

 

 

 

 

CHU130EX  

High-Speed Camera

CHU130EX

 

 

 

 

 

SCH-SN48W  

 Simple Lighting for High-Speed Camera

SCH-SN48W

 

 

 

 

CH-SN_300  

 Strobe Lighting  CH-SN

 

 

 

 

 

 

STAND TO FIX A CAMERA WITH A WIDE FIELD OF VIEW

When using a camera with a wide field of view or a long operating distance, the support of the stand may be reflected.
In this case, adding a horizontal stay to a regular camera stand can avoid reflection.

 

カメラスタンド

 

 

カメラスタンド

 

The following camera accessories are also available at camera specialty stores.

 

カメラスタンド

 

 

If you would like to know more about our products, please contact our technical support.

HOW TO MAKE A CAMERA STAND WITH A LOAD CAPACITY OF 5 KG

The load capacity of the camera angle attached to the end of the flexible arm (FA100-M) manufactured by Shodensha is 5 kg.

 

 

By attaching this to the camera stand, it can be made into a 5 kg load-bearing type.
(A normal camera stand weighs 2 kg.)

 

 

In order to attach the camera angle for flexible arm to a 25mm dia. post, the following parts must be custom-made.
Since they are custom-ordered, the length can be manufactured according to your request.

 

 

Production Examples 
<Camera stand with a load capacity of 5kg

HIGH LOAD-BEARING CAMERA STAND

Camera mounting screws are common in most cases.
In many cases, thermographs and large high-speed cameras also share the same mounting screws.
If you are looking for a stand with a high load capacity, you can easily find one by looking for camera supplies.
Although dedicated equipment may be available, we will introduce an easier and less expensive way to take pictures.

 

Load capacity 5kg type

 

Load capacity 10kg type

 

Shodensha also has a custom-made camera stand with a load capacity of 5 kg.

 

3 TYPES OF CAMERAS CAPABLE OF LONG TIME VIDEO RECORDING

How to record for long periods of time

How long do you record for? How will it be stored? Is there a need to remotely view Live video? How many cameras are needed? There are various methods depending on the purpose. There are three main methods.

 

(1)Security camera

A camera and a recorder are required, and the camera and recorder are connected to one network. Videos are stored on the recorder. All necessary videos can be saved as data. Basically, Live video can be checked within the network.

 

Merit

 ・Long time recording (e.g. 1 month)

 ・Multiple cameras (e.g., 16 cameras) can be recorded

 ・All recorded data can be saved

Demerit

 ・Wiring and setup are complex (generally done by a professional installer).

 ・Cameras are relatively inexpensive, but recorders are expensive.

  (Recorder prices vary depending on the number of units and capacity of recorders that can be connected.)

 ・Cameras are often integrated and lenses are not interchangeable.

 

<Examples of commercially available security cameras and recorders>

防犯カメラ_例1  

防犯カメラ_例2

 

 

 

 

(2)Cloud Camera

In this system, you purchase only the camera and pay a monthly fee for cloud usage. Videos are stored on the cloud for a “fixed period of time”. You can watch them as many times as you like within that period. To fully save the video, it must be downloaded, and the downloadable time is determined by the initial contract. You can view the Live video from anywhere with the URL you are given.

 

Merit

 ・Very easy to wire and set up

 ・Long time recording (e.g. 1 month) is possible

 ・Capable of recording multiple cameras (16 cameras, etc.)

 ・Viewing is possible from anywhere with an Internet environment

Demerit

 ・Full storage of recorded data is limited to a certain amount of time

 ・Lenses cannot be replaced in many integrated cameras

 ・Security concerns remain

 

<An example of a commercially available cloud camera>

クラウドカメラ_例  

 

 

 

 

 

(3)Industrial Cameras

The camera is not dedicated, but a generic product. It only connects to a PC via LAN or USB and is not connected to a network. Videos are stored on the connected PC or HDD connected to the PC. Live video can be viewed only on the connected PC.

 

メリット

 ・Wiring and setup are very easy (software installation only)

 ・Lens can be replaced with a general-purpose industrial camera (C-mount)

 ・By adding software, it can be used in other ways (e.g., recording before and after an abnormal event)

 ・All data is recorded on a PC, so post-processing (editing) of files can be done with a series of PC operations

 ・Camera can be downsized

デメリット

 ・The recording time and the number of cameras are limited due to the limited capacity of the PC or HDD.

 (Những gì chúng tôi có thể cung cấp là camera 1,3 triệu pixel, có thể kết nối với 8 camera và ghi hình 8 giờ mỗi ngày
trong khoảng 7 ngày)

 

 

Industrial cameras and additional software are available from us.

HOW TO SAVE VIDEOS WITH A USB CAMERA

We sometimes receive requests from customers who want to use a USB camera to “capture and store long videos.” We have received requests from our customers to “record and save long videos” with a USB camera.
In this issue, we would like to introduce several methods for recording long videos with a USB camera.

 

 

Use Hi TriggerREC, a multifunctional compressed video recording software

 

Our USB 3.0 cameras offer Hi TriggerREC software, which makes it easy to create long videos.

・Features of Hi TriggerREC

*Video recording in H.264 compressed (.mp4) / uncompressed (.avi) format is possible.
A variety of functions are also included, such as a snapshot function that allows you to take still images at any time, and a versatile recording/stop trigger function that combines an external signal and a timer.
トリガーソフト
 
 

Use the Viewer software that comes standard with USB cameras

 

Our USB 2.0 cameras can record with the included standard-supplied Viewer software, but the AVI file standard for exporting is outdated and a file size limit of 2 Gbytes exists.
If you need a short time, you can use this Viewer software. (In case of 1.3 megapixel type (1280X1024) at 30 fps, it can record for about 15 seconds.)

 

付属の標準付属のViewerソフトウェアで録画

 

 
 
 
 

Use commercial or free recording software

Our USB 2.0 cameras can also be used as DirectShow cameras, so basically you can record with commercial or free recording software that supports DirectShow.
If you have such recording software, you can check if it is possible to record using a demo unit on loan. One well-known free software is “Amcap” provided by Microsoft as a sample program.
(The only saving format is uncompressed (AVI).

 

DirectShow対応の市販やフリーの録画ソフトウェアで録画

 

 

 

 

Use a converter to record for longer periods of time on your computer

Although not a USB camera, there is also a way to attach a USB 3.0 converter to an HDTV and record for long periods of time on a PC.
All of our HDTV models can record video if you use I-O Data Device’s GV-USB3/HD.

CAUTION WHEN RECORDING FOR LONG PERIODS OF TIME ON A PC

There are a few things to keep in mind when using a PC and a USB camera
for long-duration video recording.

 

1. About Compression

Video data files can be very large.
There are some free video recording software available, but in most cases,
they are uncompressed (AVI files, etc.).
For long time recording, it is necessary to compress the data in H.246 format
or other formats to record for long periods of time.
In the case of 1 hour of recording at 1280 x 1024 (1.3 million pixels) at 30 fps,
the file size is 430 x 430 x 430 pixels (1.3 million pixels) at 30 fps,
・430GB if uncompressed
・If compressed, it will be about 16.5GB.

 

2.About Playback

It is not a problem for about 24 hours, but be careful when the level reaches 3 days, 1 week, etc.
Even if recording can be done, it may not be possible to play it back with general-purpose playback software
such as Windows Multimedia Player.

 

For example, if you are recording for a week and each day has 8 hours of recording time,
do not batch record and create multiple files for one day (8 hours).
The compression will be 16.5 GB per hour (1.3 megapixels at 30 fps), which is 130 GB for 8 hours. 
A week would be divided into 7 files. 130GB x 7 days = 910GB.
This means that 1TB of HDD can be used for recording. If a file is only 130 GB,
it can be played back with Windows multimedia player, etc.

TRIGGER CONTROL SOFTWARE THAT IS VERY USEFUL FOR EMBEDDED CAMERAS

Trigger control software that is very useful for embedded cameras

Introducing a useful trigger control software that emits a trigger signal from an external source, such as a program controller (PLC) or sequencer, and uses an embedded USB camera.

 

●Trigger control software type

①Simple is best light model for still image storage with trigger signal input: Hi TriggerF Light

・Our Hi TriggerF Light can save a still image or capture a screen image (temporary storage) at that moment
    by inserting an external trigger signal into the camera.
・Live display is also possible without a trigger signal, making positioning and focusing easy.
・A digital zoom function allows you to enlarge or reduce the camera image to the desired size on your PC screen.         
    It also has a fit-in function that allows the camera image to fit perfectly on your PC screen. 
・The exposure time can be adjusted so that even fast objects can be photographed without blurring.

   →Perfect for cases where you only need to save still images with external trigger signal input!

 

②Middle model with still image storage + cross line display, time stamp, and binarization function with trigger signal input: Hi TriggerF Pro

・Our Hi TriggerF Pro adds cross line display, time stamp burning, and binarization to the Hi TriggerF Light functions.

   →Perfect for still image storage with external trigger signal input + plus function!

 

③Hi TriggerF Pro + multifunctional high-end model capable of multiple activation of 4 or 8 cameras: Hi TriggerF PRO4 / PRO8
 
・Our Hi TriggerF PRO4 / PRO8 can multiplex up to 4 / 8 cameras in addition to the functions of Hi TriggerF Pro.

   →Perfect for use with multiple cameras up to 4/8 units!

 

●Pre-tests and demo equipment are available for use with peace of mind.

 ・I don’t know if it’s usable.
 ・Worried about whether it will work
 ・I want to test it
   →Don’t worry. We will lend you a demo unit with camera, lens, lighting, and software.
                Please feel free to contact us.

WHEN A DIRECTSHOW-ENABLED CAMERA CANNOT BE CONTROLLED BY DIRECTSHOW SOFTWARE

■About DirectShow compatible cameras

DirectShow is a multimedia framework and API developed by Microsoft.

A DirectShow-enabled camera is a camera that works with the DirectShow framework.

 

 

 

■About DirectShow Filters

The DirectShow filter processes the camera data according to the requirements of the DirectShow software, allowing the camera to be controlled by the software.

 

 

DirectShowについて

 

The filter matches the camera and software so that they can work together.

Without the filter, the software cannot properly process the data from the camera.

 

 

 

■Major causes of DirectShow-enabled cameras not working with software

There are three main causes of problems:

 

① If a bug exists that prevents the software from properly utilizing the DirectShow framework.

②When the DirectShow filter is unable to process the data output from the camera according to the specifications required by the software. 

③Data from the camera does not match the DirectShow filters supported by the software.

In both cases, correcting the respective causes will improve the situation.

(There are compounding factors, so sometimes everything has to be addressed.)

 

 

■Shodensha’s response

If you cannot use commercially available DirectShow software with our DirectShow-enabled camera, we can provide support such as analysis of the cause if you lend us the software. Please feel free to contact us.

WHAT IS DYNAMIC RANGE?

When taking pictures, the camera may make extremely bright areas appear white (halation or blown out highlights), or extremely dark areas may become black and disappear from view (Black Crush).

The range in which the difference in brightness and darkness can be captured at the same time, from one step before halation (overexposure) to one step before blackout (completely dark, unable to see anything), is called the dynamic range. ) is measured.

The wider the dynamic range, the better the camera performance. However, no matter how powerful the camera is, it cannot match the ability of the human eye to capture images. For example, even if a scene is clearly visible to the human eye, when photographed with a camera, it may be overexposed or details may not be visible.

WHAT IS FRAME RATE?

Frame rate refers to the number of frames displayed within a certain amount of time in a video. This number is usually expressed in frames displayed per second and is measured in fps (frames per second).

 

With USB technology, a theoretical maximum speed is set, regardless of the performance of the computer. Specifically, for USB2.0, the maximum speed is 480Mbps (=60MB/s), and for USB3.0, the maximum speed is 5120Mbps (=640MB/s).

 

Considering the theoretical performance of a USB camera that uses USB 2.0, it is approximately 15 fps for a 1.3 MP (1280X1024) image, approximately 10 fps for a 2 MP (1600X1200) image, and approximately 10 fps for a 3 MP (2048X1535) image. It is said that it is possible to achieve approximately 6fps. This doesn’t have much to do with camera performance or price.

 

However, these are only theoretical values, and actual performance may vary significantly depending on CPU processing power, memory capacity, and other system environments (such as software running in the background). In actual measurements, results are often around 60% of the theoretical value or less.

However, there are ways to improve the frame rate slightly. Please contact technical support for more information.

 
 
 
 
 

SIMULTANEOUS MULTIPLE ACTIVATION OF MULTIPLE USB CAMERAS

Multiple Activation of Multiple USB Cameras

Recently, we have been receiving an increasing number of inquiries about using multiple USB cameras on a single computer at the same time.
I would like to discuss some points to note when constructing it.

●How to connect to a PC

There are two main methods of connecting to a computer.

If your PC has an available PCI-Express slot, you can add an “expansion board” to increase the number of USB ports (connection ports).
One advantage of this method is that one USB port is used per USB camera, so it is less likely to cause problems such as insufficient communication capacity (bandwidth shortage) of the PC or insufficient power supply from the PC to the USB camera due to the increase in data transmission volume caused by using multiple cameras.
This method is recommended when connecting multiple USB cameras at the same time, since it is less likely to cause problems such as insufficient communication capacity (bandwidth shortage) of the PC or insufficient power supply from the PC to the USB camera.

If three or four USB cameras are to be connected at the same time, we further recommend adding an “Industrial Expansion Board”.

The disadvantages are that the board can be added if there is an available PCI-Express slot in that PC, and that it takes more time and effort to add the board.

 

USB frame grabber board (4 ports)
USB-IB4

 

 

The second method is to use a “USB hub” for one USB port on a PC
and connect multiple USB cameras to that USB hub.
One advantage is that it can be done when there is no space in the PC to add an “expansion board”, for example.
It is especially suited for notebook PCs with a small number of USB ports.

 

Disadvantages include the following.

①Use a USB hub to one USB port on the PC side
Since multiple cameras will be connected, there is a large possibility of “bandwidth shortage,” a shortage of PC communication capacity due to the increase in data transmission volume caused by the use of multiple cameras.。  
Compared to adding an expansion board to the desktop to provide additional USB ports, this will further limit the amount of data the camera can use = the number of pixels (resolution) it can use.

②Using a USB hub to connect multiple cameras to a single USB port on the PC side will result in insufficient power supply to the USB camera, which will greatly increase the possibility of not being able to see the image.
The initial setup procedure for recognizing and displaying each camera may become complicated.

③The initial setup procedure for recognizing and displaying each camera may become complicated.

●Software that enables multiple activation (simultaneous use) of multiple USB cameras

Requires software that can be multiply activated on a single PC.
In this issue, we will introduce “Hi TriggerF PRO4 / PRO8,” a highly functional trigger shooting software (multiple-unit version) made by Shodensha.

 

 

多重起動トリガーソフトウェア Hi TriggerF Pro4

Advanced Trigger Photography Software (Multiple Units Version) 
Hi TriggerF PRO4 / PRO8

Functions of the “Multiple Launch Trigger Software Hi TriggerF PRO4 / PRO8

・Multiple activation is possible for up to 4 or 8 cameras. (Please contact us if you would like more than one camera.)
・Our Hi TriggerF Light can save a still image or capture a screen image (temporary storage) at that moment by inserting an external trigger signal into the camera.
・Live display is also possible without a trigger signal, making positioning and focusing easy.
・A digital zoom function allows you to enlarge or reduce the camera image to the desired size on your PC screen.
 It also has a fit-in function that allows the camera image to fit perfectly on your PC screen.
・The exposure time can be adjusted so that even fast objects can be photographed without blurring.
・Cross-line display, timestamp burning, and binarization functions have also been added.

●Available computers

The more cameras you have (3, 4, 8, etc.), the higher spec PCs you will need.

●Other notes

Industrial cameras by themselves do not show anything.
A separate lens is required for each focal length and magnification.
Additional lighting may also be required depending on the brightness of the camera installation location.
 

  →Please contact our technical department if you would like to use multiple USB cameras for multiple activations. We can propose a total system.