The Tiffen 138mm Cool Day for Night Filter is a daylight colour effect filter designed to simulate the appearance of photography or film shot under moonlight. This filter uses a blue colour to create its effect, based on the perception that moonlight is cool compared to daylight. To further enhance the realism of its results, this Cool Day for Night filter also reduces contrast to diminish the appearance of fine details that would be more difficult to perceive due to the reduced light levels present at night.

This filter is manufactured using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass, polishing it flat to a tolerance of 1/10,000th of an inch, then mounting it in precision metal rings.


- Daylight colour effect filter using blue colour and reducing contrast to simulate the appearance of photography or film shot under moonlight.
- Filter factor of 2.5x creating an exposure reduction of 1.3x.
- Maintains realistic skin tones relative to the filter effect.
- 138mm front filter thread allowing use with other filters.
- Padded pouch for storage and transport.


Specifications