Lee's 1/8 CTB filter for very subtle blue color correction.
Definition
The Lee 218 is a CTB (Color Temperature Blue) filter from the Lee Filters range. The filter converts 3200K Tungsten light to 5600K daylight.
Practical Application
This lighting element is used in various professional scenarios:
- Color Correction: Adjusting color temperatures between different light sources
- Light Control: Precise control of light intensity and quality
- Effect Design: Creating specific visual atmospheres
- Efficiency Improvement: Reducing post-production effort through precise on-set control
Technical Details
Important technical features include:
- Light Transmission: 36%
- Color Shift: +131 Mired
- Available as roll or sheet
- Heat resistant up to 130°C
Practical Tips
- Open exposure by 1.5 stops when used
- Can be combined with Lee 216 for half CTB correction
- Use a light meter for accurate quantification of light changes
- Protect from direct contact with hot light sources
Professional Standards
In professional film and television production, standardized lighting tools are essential for:
- Consistent image quality over multiple shooting days
- Quick adjustments without extensive rebuilds
- Cost-effective production
- Meeting the highest quality standards
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