Color Temperature of light sources
Filter Exposure Factor
Black and White Contrast control Filters
Conversion filters for color films
Light balancing filters
Neutral Density filters
Ultraviolet- Absorbing Filters
Infrared transmitting Filters
Color compensating filters
Safelight filters
Contrast Control-Printing Filters
Color Printing Filters
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Conversion filters for color films
These filters balance the spectral composition of the photographic light
source to the temperature balance of photographic films
The number in brackets () shows the corresponding Kodak Wratten filters.
The number in brackets [] shows the corresponding B+W filters.
Filter
Color
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Filter
Number
|
Exposure
Increase
In Stops
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Conversion
In Kelvin
|
Mired
Shift
Value
|
Blue |
80A
80B
80C
80D
|
2
1 2/3
1
1/3
|
3200 to 5500
3400 to 5500
3800 to 5500
4200 to 5500
|
-131
-112
-81
-56
|
Amber |
85C
85
85N3
85N6
85N9
85B
85BN3
85BN6
|
1/3
2/3
1 2/3
2 2/3
3 2/3
2/3
1 2/3
2 2/3
|
5500 to 3800
5500 to 3400
5500 to 3400
5500 to 3400
5500 to 3400
5500 to 3200
5500 to 3200
5500 to 3200
|
81
112
112
112
112
131
131
131
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(80A) [KB15]
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This filter makes possible the use of daylight film in artificial light
with a color temperature about 3000 degrees K without the color overtones.
3200K -> 5500K Filter Factor: 4x
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(80B) [KB12]
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This filter converts artificial light of color temperature 3400 K to
daylight color film. 3400K -> 5500K Filter Factor: 3x
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(80D) [KB6]
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This filter reduces the strong red tendency of morning and evening
light. It used for the optical reduction of extreme yellow, orange and
red elements of scenes. 4100K -> 5500K Filter Factor: 1.5x
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(85) [KR12]
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This filter makes possible the use of tungten color film in daylight
or with flash illumination. This eliminates the strong overall bluish cast
which would be present otherwise. 5500K -> 3400K Filter Factor: 2x
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(85B) [KR15]
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This filter has the same usage as 85, but has better results when photographing
areas with very clear air or high daylight temperature. 5500K -> 3200K
Filter Factor: 2.3x
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© 1998 Black & White Art Zone - Filterzone. All Rights Reserved.
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