Kodak Wratten 2 Gelatin Filters. 3" Neutral Density Series.

Kodak Wratten Gelatin Filters. 3" Neutral Density Series. These thin 3" x 3" gelatin filters are used for reducing exposure thus allowing for reduced depth of field or slower shutter speeds 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.

0.30 Neutral Density. -1 stop. CAT: EK8934200

0.60 Neutral Density. -2 stops. CAT: EK8602401

0.90 Neutral Density. -3 stops. CAT: EK1964741