Green correction gel that neutralizes the magenta cast caused by daylight reflecting off window glass.
Definition
Window Green is a green color correction filter used in film production. It balances daylight (5600K) with artificial light (3200K) when windows and tungsten lamps are used in the same shot.
Practical Application
This lighting element is used in various professional scenarios:
- Color Correction: Converts 5600K daylight to 3200K artificial light
- Light Control: Prevents color casts in mixed-light situations
- Effect Design: Creates a greenish atmosphere for specific moods
- Efficiency Improvement: Avoids complex color correction in post-production
Technical Details
Important technical features include:
- Minus-green filter with -0.6 to -1.2 CC values
- Available as a roll of film or gel sheets in various formats
- Reduces light intensity by approximately 1/3 stop
- Temperature resistant up to 150°C for use on hot lamps
Practical Tips
- Use with tungsten lighting on windows, not the other way around
- Test with a light meter – the filter reduces available light
- Protect the filter from direct sunlight – it will fade
- Can be combined with ND filters for additional light reduction
Professional Standards
In professional film and television production, color filters enable:
- Uniform color temperature with mixed light sources
- Consistent skin tones without post-production correction
- Time savings in complex lighting setups
- Broadcast standards for live transmissions
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