In excellent used working condition. Only used a couple of times experimenting with Cinestill 800T in daylight.
The Tiffen 82mm 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, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings.
Color conversion filter decreases color temperature and provides a warming effect.
Converts 5500 to 3400K for using tungsten-balanced film in daylight conditions.
Filter factor of 1.6 requires a 0.6-stop increase in exposure.