When observing the area marked with a red circle using standard ring lighting, the difference between halation and shadowed areas becomes significant, resulting in a highly difficult-to-observe image.
By using a four-segment LED ring light and illuminating only the longitudinal direction, halation can be suppressed.
| Increasing the light intensity further enables the observation of the R-shaped area. | By increasing the magnification, the observation of the R-shaped area becomes easier. |
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| By using an aperture lens, the depth of focus is increased, making the observation easier.
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| ＜When the aperture is fully open＞ | ＜When the aperture is stopped down＞ |
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However, using the aperture results in a decrease in brightness and a slight reduction in resolution. Therefore, with our lenses, the practical magnification range is up to approximately 120x.
