B+W's Series 8 Yellow Orange 022 Glass Filter is a filter for black and white film.
The effect of this filter is quite powerful. It darkens violet and blue very strongly, green strongly, it even darkens yellow-green a bit. Landscape- and architectural photographs have an increased, virtually "graphic" contrast, clouds in the sky already look dramatic. Because skin tones are strongly lightened in relation to the green tones of plants, this is a favored filter for nude photography outdoors, because it raises the contrast between the lighter bodies and darker landscapes. Its filter factor is approximately 4.
Each glass surface is vacuum coated with one layer of Anti-Reflection coating. This single layer helps to prevent internal ghosting and reflections. It also improves light transmission from approximately 92% (uncoated glass) to over 98%.
This filter uses B+W's Series mount made of brass. Filter glass, in mounts without threads, are placed into special holders and are held in place with a retaining ring or lens hood.