B+W 72mm SLIM FRAME KR3 (81C) Warming Conversion Filter - SILVER BOX MPN: 098995
This is an older SLIM FRAME series Filter.
*Filter does not have Front Threads
3mm exposed filter ring depth. (Does not have Front Threads. Will not accept a snap in Lens Cap.) Same Standard SC coated product.
The B+W KR3 (81C) Filter is a color conversion filter that helps to slightly decrease color temperatures and provide a warming effect. The 81C filter adds more warmth to the image for use with tungsten films in natural lighting. It provides a decrease of 400K, helping to render the scene more similarly to incandescent illumination.
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.
Provides a decrease of 400K for use of tungsten-based films in daylight situations.
Constructed from high quality Schott glass for optical clarity.
Brass filter ring helps to prevent jamming and provides additional strength.
81C Filter for Color Conversion
Warming Filter to Decrease Color Temp
Single Coated Schott Glass
Rugged Black Brass Filter Ring
Type: Warming filter
Grade: 81C (KR3)
Filter Factor: 1.5 (0.6 stop)
Effect: Provides decrease in color temperature for warming effect
Application: For use with tungsten-balanced film outdoors
Color Temperature: -400K
Construction: Schott Glass