The Tiffen 3 x 4" 85 Color Conversion Filter helps to decrease the color temperature from 5500 to 3400K, allowing the use of tungsten-balanced film in daylight conditions. The warming effect of this filter requires a 0.6-stop increase in exposure for normal results.
This filter is made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. It measures 3 x 4" / 76.2 x 101.6mm.
|Type||Amber color conversion|
|Size||3 x 4" / 76.2 x 101.6 mm (0.2" / 4 mm thick)|
|Filter Factor||1.6 (0.6 stop)|
|Effect||Decreases color temperature|
|Application||For use when photographing with tungsten-balanced film in daylight conditions|
|Color Temperature||5500 to 3400K|