Lee's half-strength CTB gel that moderately cools tungsten sources, shifting Color Temperature up by approximately 800K.
Definition
The Lee 202 is a CTB (Color Temperature Blue) color filter from the Lee Filters series for film production and professional photography. The filter converts tungsten light (3200K) to daylight temperature (5600K).
Practical Application
This lighting element is used in various professional scenarios:
- Color Correction: Matching artificial light to daylight
- Light Control: Color temperature correction without loss of light characteristics
- Mixed Lighting Situations: Balancing window and tungsten lighting
- Workflow Optimization: Reducing color grading effort
Technical Details
Important technical features include:
- Color Temperature Shift: +131 Mired (3200K → 5600K)
- Light Loss: Approximately 1⅓ f-stops
- Available as sheets (61x61cm) or rolls
- Heat resistant up to 130°C
Practical Tips
- Compensate exposure by 1⅓ stops
- Mount the filter between barn doors or in front of a Fresnel lens
- Maintain distance from the light source in case of heat development
- Store dry and dust-free
Professional Standards
In professional film and television production, CTB filters enable:
- Consistent color temperature in mixed lighting setups
- Quick adjustments without changing lamps
- Reduced post-production costs
- Broadcast-compliant color reproduction
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