gray filter 예문

예문모바일

Included with the sight is a lens hood for mounting on the ocular that reduces image quality-impairing stray light and a gray filter for glare reduction.
The yellow-white light, or one of the identical paired lights, employs a 50 % neutral gray filter to reduce luminance cues to the color-deficient patient.
Exposure can also be changed by altering the light level, for example using neutral-gray filters or changing the degree of illumination of the subject ( e . g . artificial light, flash ).
Some of the scattered light ( which illuminates the entire surface of the filter ) will be phase-shifted and dimmed by the rings, but to a much lesser extent than the background light ( which only illuminates the phase-shift and gray filter rings ).
First, the background light is phase-shifted by " 90?by passing it through a gray filter ring this method maximizes the amount of scattered light generated by the illumination ( i . e ., background ) light, while minimizing the amount of illumination light that reaches the image plane.