The Tiffen 82mm 80B Color Conversion Filter helps to increase the color temperature from 3400 to 5500K, allowing the use of daylight-balanced film in tungsten-lit conditions. The cooling effect of this filter requires a 1.6-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, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings.
|Type||Blue color conversion|
|Filter Factor||3 (1.6 stop)|
|Effect||Increases color temperature|
|Application||For use when photographing with daylight-balanced film in tungsten lighting|
|Color Temperature||3400 to 5500K|
|Front Filter Thread Size||82 mm|
|Front Lens Cap Size||82 mm|