Gehmann six-color filter 566 / 0.5-3.0mm

The Gehmann six-color filter is an extension of the iris diaphragm disc. This filter integrates six additional colors to improve different lighting conditions. yellow = is an edge filter, general contrast enhancement in black and white, reduction of glare green = reduction of stray light and glare, pleasant color due to high stimulus threshold for the eye brown = provides daylight conditions under artificial lighting with a blue tint gray = absorbs color-neutral 75% of the light light gray = absorbs color-neutral 50% of the light orange = edge filter for contrast enhancement in black and white, suppression of stray light