Kodak Wratten Gelatin Filter. 3" 80B, 80C, 81EF, 85, 85B and 85C.

Kodak Wratten Gelatin Filter. 3" 80B, 80C, 81EF, 85, 85B, 85C.. These thin 3" x 3" gelatin filters are used for color correction and are optically pure. On motion picture cameras they are attached to the rear of the lens or held in a special internal frame. Still photographers mount them in special 3" x 3" frames.

The 81EF and 85 series are warming filters. The 85 converts tungsten film to daylight. The 81EF is approximately .5 value of an 85.

81EF: CAT 149 6108