The Tiffen 2x3" Day for Night (Lavender-Blue) Cooling Filter produces a day-for-night photographic effect. It is an effect that makes a scene recorded in daylight to appear as if it were at twilight.
Shooting in a remote location where working at night is difficult? No access to electricity for lights? Limited budget? Day-for-Night filters to the rescue. They give a special "evening" look to images shot during the day.
This is usually accomplished by the use of a filter that both underexposes by about two stops, and can also produce a bluish color overcast. Lighting, contrast, and other factors contribute to the reality of this effect.
Industry standard special effect filter
Unique visual effect makes this a highly prized filter for certain scenarios
Tiffen 23CDFN Specs
Day for Night
2x3" (50 x 75 x 4 mm)
Imitates a "night" appearance on film when used during the day