4
Conversion Filters for Color Films

These filters are intended for use whenever s i g n i fic a n t

changes in the color temperature of the illumination are

re q u i red (for example, daylight to artificial light). The fil t e r

may be positioned between the light source and other ele-

ments of the system or over the camera lens in conven-

tional photographic re c o rding.

*These values are approximate. For critical work, check by accurate tests, especially
if you use more than one fil t e r .
Filter Filter Exposure Increase Conversion
Color Number In Stops* in Degrees K
80A 2 3200 to 5500
Blue 80B 12/33400 to 5500
80C 1 3800 to 5500
80D 1/34200 to 5500
85C 1/35500 to 3800
85 2/35500 to 3400
85N3 12/35500 to 3400
Amber 85N6 22/35500 to 3400
85N9 32/35500 to 3400
85B 2/35500 to 3200
85BN3 12/35500 to 3200
85BN6 22/35500 to 3200

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