ZBE CHROMIRA, Руководство пользователя

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Chromira 50
Digital photo writers of any type (laser- or LED- based) typically are not able to
achieve quite as high a d-max as that achieved by conventional darkroom
(enlarger) printing. Of course, this depends upon the photographic material
being used, and the quality of the chemical process used to process your
photographic prints. It is strongly recommended that you use a “digital” photo
paper if possible.
For any photographic material, there is a level of exposure above which the
image on that material will not get any darker, even if the exposure is increased.
This maximum darkness is the D-max for that material.
The condition known as D-Max Failure can happen when you have set a D-max
target in the Chromira Balance program’s Densitometer window that is too high
for the Chromira to achieve on the particular material being used.
This causes the Balance program to increase the Chromira’s exposure output
above the point where changes in the exposure output will make the desired
change in the printed image density. When this happens, the Balance program
no longer has “control” over the image quality at densities above this level.
This causes the two primary symptoms of D-Max Failure:
1. There are lines in the black (patch zero) that do not go away, even though
the rest of
the grey scale has a good balance (no lines).
2. The top two patches in the grey scale (patch 0 and patch 1) look
very close to each other in density.
Keep in mind that these symptoms can, and usually do, happen in only one or
two of the three primary colors. You can look at the shorter color scales below the
main grey gradient in the Test Print, and see if either of these symptoms is
happening in an individual color.