Minimal diffusion filter for subtle light softening with negligible light loss.
Definition
The Lee 251 is a 1/2 Minus Green filter from the Lee Filters series. The polycarbonate filter reduces the green component of fluorescent lights by half a stop, aligning their color temperature with Tungsten light.
Practical Application
The filter corrects mixed lighting situations:
- Color Correction: Aligning fluorescent tubes (5600K) with Tungsten light (3200K)
- Light Control: Reduces transmission by 0.5 stops
- Effect Design: Removes green cast from practical light sources
- Efficiency Improvement: Eliminates color correction in post-production
Technical Details
Specifications of the Lee 251:
- Transmission: 79% at 550nm
- Thickness: 0.1mm polycarbonate
- Color Temperature Shift: -800K (towards Tungsten)
- Compatible with standard filter holders and barndoors
Practical Tips
- Open exposure by 1/2 stop when using
- Use a spot meter to control color temperature
- Do not bend - polycarbonate breaks irreparably
- Store dry, avoid direct sunlight
Professional Standards
The Lee 251 enables:
- Uniform color temperature between artificial and daylight
- Instant correction without lamp changes
- Reduced grip costs due to less relighting
- Broadcast-compliant color reproduction according to Rec. 709
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