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B+W 37mm 81A Warming Glass Filter
This B&W 37mm 81A Warming Conversion Glass Filter has an effect similar to that of the Kodak Wratten 81A gelatin filter. It is also similar to the KR1.5 (Skylight) conversion filter except that it is less reddish as it absorbs a little bit of the red.
The 81A controls the bluish coloration that affects daylight film. It can also remove excessive blue from the effects of electronic flash. Good for general scenics when the photographer wishes to remove the bluish cast from open shade or just add warmth to the photograph.
Note! Whereas the KR series (and the 81 series) of filters creates a feeling of warmth, the KB Series (and the 82 Series) creates a feeling of coolness
- It can be used like the KR1.5 (Skylight) filter especially with films that tend to a reddish rendition inherent to their emulsion or to the developing process
- Ideal for landscape photographs at noontime and for flash exposures on daylight reversal film when the light emitted by a compact flash unit has too high a color temperature (and, this, an excessive blue component)
81 Series Conversion Factors
- 81A decreases color temperature from 3400 - 3200 degrees Kelvin
- 81B decreases color temperature from 3500 - 3200 degrees Kelvin
- KR3 (81C) decreases color temperature from 3600 - 3200 degrees Kelvin
- KR6 (81EF) decreases color temperature from 3900 - 3200 degrees Kelvin
| Type | Color Conversion |
| Size | 37mm |
| Grade | 81A |
| Filter Factor | 1.2 (+.5-stop) |
| Multi-Coated | Not Applicable |
| Rotating | Not Applicable |
| Effect | Creates warmer tones and brighter colors on overcast days or when shooting with electronic flash |
| Application | Great for improving flesh tones |
| Color Temperature | Decreases color temperature from 3400 - 3200 degrees Kelvin |
| Construction | Schott Glass |
| Front Filter Thread Size | 37mm |
| Front Lens Cap Size | Not Specified by Manufacturer |
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
What's in the Box
- Ten-Year Warranty
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