Basic Photography Course

RED SENSITIVE EMULSION LAYER - PRODUCES

CYAN DYES

GREEN SENSITIVE EMULSION LAYER -

PRODUCES MAGENTA DYES

BLUE SENSITIVE EMULSION LAYER - PRODUCES

YELLOW DYES

Figure 2-8.Cross section of color printing paper.

When the same negative is exposed on another sheet of
paper with green light, a flat or not enough contrast print
is produced. When the normal-contrast negative is
printed with the proper combination of blue and green
light, a print with natural contrast is produced; therefore,
to control contrast when using variable contrast papers,
you can use a series of yellow and magenta filters to
control the amount of blue and green printing light

during exposure.

COLOR PRINTING PAPERS

Color printing papers are for printing color

negatives or color transparencies. Like color negative
films, color printing paper can be identified by the
suffixes "color" and "chrome." These papers are
designed for printing color negatives and color
transparencies, respectively.

Like color films, color papers have three emulsion

layers. The order of the emulsions is reversed in
comparison to color films (fig. 2-8). The top emulsion
layer is sensitive to red light and produces cyan dyes,
the middle emulsion layer is sensitive to green light and
produces magenta dyes, and the bottom emulsion layer
is sensitive to blue light and produces yellow dyes.

PAPER SURFACES

Photographic papers are available in a variety of

paper surfaces, such as matt, semimatt, lustre, high
lustre, pearl, and glossy. The use of different paper
surfaces depends on the final application of the
photograph. There are two paper surfaces that arc used
frequently in Navy imaging facilities: glossy and matt.
Paper that has a smooth, glossy surface provides a print
with higher contrast and higher densities or color
saturations, resulting in an apparently sharper image.
This is due to the direct reflection quality of the paper
surface (fig. 2-9, view A). Glossy papers are always
used for photographic prints that are used to show fine
detail, such as equipment damage or intelligence
photographs.

Light reflected from MATT paper is diffused and

provides a softer, lower contrast image (fig. 2-9, view
B). Because of the lower contrast, subject detail does not
appear as sharp as an image on glossy paper. Matt papers
are used commonly for portraiture and scenic
photographs.

PROPER HANDLING AND STORAGE OF
FILMS AND PAPERS

Care in handling films and papers prevents

fingerprints, abrasions, and scratches on the surfaces of
these materials. You should particularly avoid
unnecessary contact between an emulsion surface and
any other object. Only handle light-sensitive materials

by the edges.

Light-sensitive materials should be removed from

their packages in a room that is clean, dust-free, and
lightproof. The workbench and your hands should be

clean

and

dry. Light-sensitive materials should be

Figure 2-9.Reflection of light of different surface paper.

2-10

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Basic Photography Course

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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 -> RED SENSITIVE EMULSION LAYER - PRODUCES CYAN DYES GREEN SENSITIVE EMULSION LAYER - PRODUCES MAGENTA DYES BLUE SENSITIVE EMULSION LAYER - PRODUCES YELLOW DYES Figure 2-8.Cross section of color printing paper. When the same negative is exposed on another sheet of paper with green light, a flat or not enough contrast print is produced. When the normal-contrast negative is printed with the proper combination of blue and green light, a print with natural contrast is produced; therefore, to control contrast when using variable contrast papers, you can use a series of yellow and magenta filters to control the amount of blue and green printing light during exposure. COLOR PRINTING PAPERS Color printing papers are for printing color negatives or color transparencies. Like color negative films, color printing paper can be identified by the suffixes "color" and "chrome." These papers are designed for printing color negatives and color transparencies, respectively. Like color films, color papers have three emulsion layers. The order of the emulsions is reversed in comparison to color films (fig. 2-8). The top emulsion layer is sensitive to red light and produces cyan dyes, the middle emulsion layer is sensitive to green light and produces magenta dyes, and the bottom emulsion layer is sensitive to blue light and produces yellow dyes. PAPER SURFACES Photographic papers are available in a variety of paper surfaces, such as matt, semimatt, lustre, high lustre, pearl, and glossy. The use of different paper surfaces depends on the final application of the photograph. There are two paper surfaces that arc used frequently in Navy imaging facilities: glossy and matt. Paper that has a smooth, glossy surface provides a print with higher contrast and higher densities or color saturations, resulting in an apparently sharper image. This is due to the direct reflection quality of the paper surface (fig. 2-9, view A). Glossy papers are always used for photographic prints that are used to show fine detail, such as equipment damage or intelligence photographs. Light reflected from MATT paper is diffused and provides a softer, lower contrast image (fig. 2-9, view B). Because of the lower contrast, subject detail does not appear as sharp as an image on glossy paper. Matt papers are used commonly for portraiture and scenic photographs. PROPER HANDLING AND STORAGE OF FILMS AND PAPERS Care in handling films and papers prevents fingerprints, abrasions, and scratches on the surfaces of these materials. You should particularly avoid unnecessary contact between an emulsion surface and any other object. Only handle light-sensitive materials by the edges. Light-sensitive materials should be removed from their packages in a room that is clean, dust-free, and lightproof. The workbench and your hands should be clean and dry. Light-sensitive materials should be Figure 2-9.Reflection of light of different surface paper. 2-10 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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