To use a borescope and precautions when viewing at a distance,
The borescope is configured with a wide field of view.
Consequently, there is some desire to use the borescope to view wide areas.
Visibility is not impossible, but the image quality tends to degrade compared to standard lenses.
For reference, I have captured the visibility of an A3 catalog 2 meters away using both a borescope and a standard lens.
ボアスコープφ4ｍｍ 画角100度
A fixed-focus lens with a 5mm focal length and a horizontal viewing angle of 56 degrees
