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HOME : Lenses+Filters : Filters : 4x5.65 :
4x5.65 - 81EF - Tiffen
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The 81 series filters are useful with daylight corrected film in cool light conditions. As letters advance, density and warmth increases.Please inspect all of your filters thoroughly. Filter charts can be provided upon request.
81 Series
The 81 series filters are useful with daylight corrected film in cool light conditions. As letters advance, density and warmth increases.

81A, 81B, 81C, & 81EF

* Creates warmer tones and brighter colors on overcast days or when shooting with electronic flash
* Great for improving flesh tones
* 81A converts tungsten 3200 K film to 3400 K lighting


Filter-----------Conversion----------------Exposure increase
81A------------3,400 to 3,200 K---------1/3 stop
81B------------3,500 to 3,200 K---------1/3 stop
81C------------3,600 to 3,850 K---------1/3 stop
81EF-----------3,850 to 4,140 K---------2/3 stop