B+W 52 mm KR6 (81EF) Warming Color Conversion Glass Filter
With double the strength of the KR3, the B&W 52 mm KR6 Warming Color Conversion Glass filter leads to neutral color rendition in strong haze or in mountains above 2500m (8200') when transparencies are not to show "blue mountains" (which can also be attractive depending on the individual case).
Another field of application would be interior photographs on daylight reversal (slide) film when only blue light from the sky and no direct sunlight is coming through the windows - and no fill-in flash is being used. In combination with tungsten reversal film, the KR6 filter imparts the warmth of normal incandescent bulbs to the light emitted by halogen bulbs which would appear neutral white without a filter.
Note! Whereas the 81 Series of filters creates a feeling of warmth, the 82 Series creates a feeling of coolness
81 Series Conversion Factors
- 81 decreases color temperature from 3300 - 3200° Kelvin
- 81A decreases color temperature from 3400 - 3200° Kelvin
- 81B decreases color temperature from 3500 - 3200° Kelvin
- 81C decreases color temperature from 3600 - 3200° Kelvin
- 81D decreases color temperature from 3700 - 3200° Kelvin
- 81EF decreases color temperature from 3900 - 3200° Kelvin
| Type | Color Conversion |
| Size | 52 mm |
| Grade | KR 6 (81EF) |
| Filter Factor | +1/2 stop |
| Multi-Coated | No |
| Rotating | Not Applicable |
| Effect | The 81 series adds warmth to the image |
| Application |
Good for general scenics when the photographer wishes to remove the bluish cast from open shade or just add warmth to the photograph, with an 81EF having the greatest effect
1
Please Note:This filter should not be used for photographs of typically foggy landscapes close |
| Color Temperature | Decreases color temperature from 3900 - 3200° Kelvin |
| Construction | Schott Glass |
| Front Filter Thread Size | 52 mm |
| Front Lens Cap Size | 52 mm |
Filter pouch
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- Original: $9.95
- Save: $0.99
- Price: $8.96
Care & Cleaning
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- Original: $4.99
- Save: $0.50
- Price: $4.49
Caps & Wrenches
- Price: $10.95
What's in the Box
- Ten-Year Warranty
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