Rosco color filter that neutralizes green color casts from LED and daylight sources, correcting unwanted green color shifts.
Definition
Rosco 3308 is a Color Temperature Orange (CTO) color filter with a 1/8 correction. It converts daylight (5600K) to warmer artificial light (approx. 4900K).
Practical Application
Used for color temperature matching:
- Color Correction: Adjusting daylight lamps to existing artificial light
- Light Control: Reduces light output by approximately 1/3 stop
- Effect Design: Creates a warm lighting mood without a full CTO filter
- Efficiency Improvement: Avoids color grading in post-production
Technical Details
- Transmission: approx. 85%
- Color Temperature Shift: -700K with daylight
- Available as sheets (20"x24") or rolls
- Heat resistant up to 150°C
Practical Tips
- Factor in a 1/3 stop exposure correction
- Can be combined with other CTO filters for stronger correction
- Use a light meter with a color temperature function
- Store dry and protected from UV radiation
Professional Standards
Rosco filters are industry standard for:
- Color temperature continuity across shooting days
- Quick set adjustments without lamp changes
- Cost reduction compared to full-spectrum LED panels
- Broadcast-compliant color reproduction
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