The Tiffen 4 x 4" 80A colour conversion filter increases colour temperature from 3200 to 5500K, allowing the use of daylight-balanced film under tungsten lighting conditions. The cooling effect of this filter requires a 2-stop exposure increase for normal results.

This filter is manufactured using ColorCore technology, a process that laminates the filter substrate between 2 pieces of optical glass and grinds it flat to a tolerance of 1/10,000th of an inch. It measures 4 x 4" / 101.6 x 101.6 mm.


Features:

- The colour conversion filter increases colour temperature and provides a cooling effect.
- Converts from 3200 to 5500K for use of daylight-balanced film under tungsten lighting conditions.
- Filter factor of 4 requires a 2-stop exposure increase.


Specifications:

- Type: Blue colour conversion
- Dimensions: 4 x 4" / 101.6 x 101.6 mm (0.2" / 4 mm thick)
- Grade: 80A
- Filter factor: 4 (2 stops)
- Effect: Increases colour temperature
- Application: For use when photographing with daylight-balanced film under tungsten lighting
- Colour temperature: 3200 to 5500K
- Construction: ColorCore technology