The Tiffen 4 x 4" Cool Day for Night filter is a colour effect filter for daylight designed to simulate the appearance of a photographic or filmed shot in 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 in order 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, grinding it flat to a tolerance of 1/10,000th of an inch, then mounting it on precision metal rings.


Features:

- Daylight colour effect filter using blue colour and reducing contrast to simulate the appearance of a photographic or filmed shot in moonlight.
- 2.5x filter factor creates a 1.3x exposure reduction.
- Maintains realistic skin tones relative to the filter's effect.
- Front filter threads allow use with other filters.
- Soft pouch for storage and transport.


Specifications:

- Type: Colour effect
- Size: 4.0 x 4.0" (101.6 x 101.6 mm)
- Grade: 2.5x (1.3 stop)
- Filter factor: Not specified by manufacturer
- Effect: Daylight filter to simulate the appearance of a photographic or filmed shot in moonlight.
- Construction: ColorCore technology