The B+W 37mm 85 Filter is a color conversion filter that helps to slightly decrease color temperatures and provide a warming effect. The 85 converts daylight (approximately 5500K) to 3400K in order to use tungsten-balanced film outdoors.
There is a 1.5x filter factor with this filter, requiring an increase of 0.6 stop for normal exposure. B+W filters are constructed from high quality Schott glass for increased optical clarity and color fidelity. They feature a brass filter ring for durability as well as jamming prevention.
Color conversion filter helps to slightly decrease color temperatures and provide a warming effect.
Converts daylight to 3400K for use with tungsten-balanced film outdoors.
Constructed from high quality Schott glass for optical clarity.
Brass filter ring helps to prevent jamming and provides additional strength.