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The Hitech 6 x 6" 81B Filter is a color conversion filter that helps to slightly decrease color temperatures and provide a warming effect. The 81B filter adds more warmth to the image for use with tungsten films in natural lighting. It provides a decrease of 300K, 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. It measures 6 x 6" / 152.4 x 152.4mm and is constructed out of CR-39 dyed resin.
Color conversion filter helps to slightly decrease color temperatures and provide a warming effect.
Provides a decrease of 300K for use of tungsten-based films in daylight situations.
Table of Contents
6 x 6" / 152.4 x 152.4 mm
1.5 (0.6 stop)
Provides decrease in color temperature for warming effect