Basic Photography Course

Table 3-1.Parallel Filter Bars

Filter Color and No.

Deep Red

Bluish Green

Red

Bluish Green

Light Red

23A

Cyan

Orange

Cyan

Deep Yellow

Blue

Yellow

Deep Blue

47B

Yellowish Green

Violet

34A

Yellowish Green

Violet

34A

Green

Magenta

Green

Magenta

Use the parallel filter bars to choose contrast filters

for black-and-white photography. Adjacent filters

lighten colors next to them. Opposite filters darken
colors in the print; for example, a yellowish green No.

11 filter lightens subjects that are yellowish green or

yellow and darkens subjects that are violet. A No. 44
cyan filter lightens blue and blue-green and darkens
light red and orange.

Correction Filters

Although panchromatic film responds to all the

colors the eye can see, it does not reproduce tones of red,
green, and blue objects in the same relative values as the
eye sees them. The human eye is much more sensitive
to green than it is to blue and red, and these colors look
darker to the eye than green (fig. 3-2). Panchromatic
film is more sensitive to blue and violet and looks lighter
than green in a black-and-white print. This high
sensitivity to blue and violet causes an overexposure to
the film of blue objects as compared to green objects.
This overexposure causes a dense negative image that

Figure 3-2.Color sensitivity of the average human eye.

results in a light print image (fig. 3-3).

A No. 8 yellow filter with panchromatic film helps

to reproduce colors of a daylight scene with the same
brightness relationship as seen by the human eye.

When using tungsten lighting, you can use a

yellowish green No. 11 filter to reproduce the natural
brightness relationship with panchromatic film. The
yellow in the filter absorbs the ultraviolet radiation and
some of the blue light, while the green in the filter

absorbs some of the red light.

Figure 3-3.Color sensitivity of panchromatic film.

3-3

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DOFMaster for Windows On-line Depth of Field Calculator DOFMaster for Mobile Devices On-line Depth of Field Table Hyperfocal Distance Chart Articles FAQ Recommended Books Support Contact Links Home As an Amazon Associate I earn from qualifying purchases.	contents <- previous page next page -> Table 3-1.Parallel Filter Bars Filter Color and No. Filter Color and No. Deep Red 29 Bluish Green 65 Red 25 Bluish Green 65 Light Red 23A Cyan 4 Orange 21 Cyan 44 Deep Yellow 15 Blue 47 Yellow 8 Deep Blue 47B Yellowish Green 11 Violet 34A Yellowish Green 13 Violet 34A Green 58 Magenta 33 Green 61 Magenta 33 Use the parallel filter bars to choose contrast filters for black-and-white photography. Adjacent filters lighten colors next to them. Opposite filters darken colors in the print; for example, a yellowish green No. 11 filter lightens subjects that are yellowish green or yellow and darkens subjects that are violet. A No. 44 cyan filter lightens blue and blue-green and darkens light red and orange. Correction Filters Although panchromatic film responds to all the colors the eye can see, it does not reproduce tones of red, green, and blue objects in the same relative values as the eye sees them. The human eye is much more sensitive to green than it is to blue and red, and these colors look darker to the eye than green (fig. 3-2). Panchromatic film is more sensitive to blue and violet and looks lighter than green in a black-and-white print. This high sensitivity to blue and violet causes an overexposure to the film of blue objects as compared to green objects. This overexposure causes a dense negative image that Figure 3-2.Color sensitivity of the average human eye. results in a light print image (fig. 3-3). A No. 8 yellow filter with panchromatic film helps to reproduce colors of a daylight scene with the same brightness relationship as seen by the human eye. When using tungsten lighting, you can use a yellowish green No. 11 filter to reproduce the natural brightness relationship with panchromatic film. The yellow in the filter absorbs the ultraviolet radiation and some of the blue light, while the green in the filter absorbs some of the red light. Figure 3-3.Color sensitivity of panchromatic film. 3-3 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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