Rosco # 3208 1/4 Blue CTB Color Conversion Gel Filter (24"x25' Roll)
Roscoe 1/4 Blue CTB Color Conversion Gel Filter - This filter is traditionally used to convert tungsten lighting to daylight. CTB (Color Temperature Blue) filters are available in a full spectrum of degrees (strengths) which, depending on your needs, can be used to either raise the temperature of your lighting or used to create different lighting interpretations.
CTB filters offer you complete control when shooting under tungsten lighting.
| Color | 1/4 Blue |
| Size | 24"x25' (61cm x 7.6 m) |
| Transmission | 74% |
| Mired Shift | 30 |
| Application | Boosts 3200K sources to 3500K. A partial conversion to compensate for voltage reduction, or to boost aging HMI lamps or household incandescent sources. |
Stands & Support Equipment
- Price: $39.95
Misc Accessories and Adapters
- Price: $2.50
Tutorials
- Price: $24.88
What's in the Box
- 24"x25' Roll
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