Black and White Filter Guide
 
 
 
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

  Neutral Density filters

Neutral density filters may be used with all types of films. They block the entire visible spectrum evenly and allow light reduction without influencing color rendition or contrast. They are designed to reduce aperture values. When there is to much light, or a wide aperture is required, ND filters is used. For use of high-speed films or long-exposure motion effects , the ND filters are ideal.

ND filters of higher values are required for observation of the sun or when photographing smelters and other intense sources.
 

Neutrol 

Density

Percent 

Transmission 

Filter 

Factor

Increase in 

Exposure(Stops)

0.1 

0.2 

0.3 

0.4 

0.5 

0.6 

0.7 

0.8 

0.9 

1.0 

2.0 

3.0 

4.0

80 

63 

50 

40 

32 

25 

20 

16 

13 

10 

1 

0.1 

0.01

1 1/4 

1 1/2 

2 

2 1/2 

3 

4 

5 

6 

8 

10 

100 

1000 

10000

1/3 

2/3 

1 

1 1/3 

1 2/3 

2 

2 1/3 

2 2/3 

3 

31/3 

6 2/3 

10 

13 1/3

 





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