GIMPPRINT-COLOR(7) Gimp-Print Manual Pages GIMPPRINT-COLOR(7)
gimpprint-color - Gimp-Print color balancing
Gimp-Print includes several color balancing controls. These may be used to adjust the
original image's brightness and contrast and gamma, and the density and saturation of the
output, as well as the individual cyan, magenta and yellow levels.
Yellow The range of values is 0.0 - 4.0, and defaults to 1.0. These three options allow
specification of the cyan, magenta, and yellow levels independently, for rebalanc-
ing the levels. Normally, these should be adjusted to yield neutral gray, but they
can be used for other effects.
The range of values is 0.0 - 2.0, and defaults to 1.0. This adjusts the brightness
of the image. 0.0 gives a fully black image; 2.0 gives a fully white image. Val-
ues greater than 1 will result in black not being solid and highlights turning
white; values less than 1 will result in white not being perfectly clear and shad-
ows turning black.
The range of values is 0.0 - 4.0, and defaults to 1.0. Adjust the contrast of the
image. 0.0 gives a solid gray for the entire image, the exact gray depending upon
the brightness chosen.
Gamma The range of values is 0.1 - 4.0, and defaults to 1.0. Adjust the gamma of the
image, over and above the printer-specific correction. Gamma less than 1.0 will
result in a darker image; gamma greater than 1.0 will result in a lighter image.
Unlike brightness, gamma adjustment does not change the endpoints; it merely
changes the shape of the input->output curve.
The range of values is 0.1 - 2.0, and defaults to 1.0. Adjust the amount of ink
deposited on the paper. If you've chosen the correct paper type and you're getting
ink bleeding through the paper or puddling, try reducing the density to the lowest
value you can while still achieving solid black. If you're not getting solid
black, even with the contrast and brightness at 1.0, try increasing the density.
All of the printers supported here actually need less than 100% ink density in most
cases, so the actual density is something other than the nominal density setting.
The effective density setting cannot go above 100%, so if a value specified will
result in an excessively high density level, it will be silently limited to 1.0.
The range of values is 0.0 - 9.0, and defaults to 1.0. Adjust the brilliance of
colors. 0.0 results in pure grayscale; using this with Color=1 is one way of get-
ting grayscale (see below under "Color" for a full discussion). Saturation of less
than 1.0 results in more muted colors; saturation of greater than 1.0 results in
more vibrant colors. Very high saturation often results in very strange effects,
including posterization and banding that might not be expected. For normal pur-
poses, the saturation should generally be less than 1.5.
Copyright (C) 2001 Michael Sweet (email@example.com) and Robert Krawitz (firstname.lastname@example.org)
This program is free software; you can redistribute it and/or modify it under the terms of
the GNU General Public License as published by the Free Software Foundation; either ver-
sion 2 of the License, or (at your option) any later version.
This manual page was written by Roger Leigh (email@example.com)
gimpprint-dithers(7), gimpprint-imagetypes(7), gimpprint-inktypes(7), gimpprint-media-
sizes(7), gimpprint-mediasources(7), gimpprint-mediatypes(7), gimpprint-models(7), gimp-
Version 4.2.4 25 Nov 2002 GIMPPRINT-COLOR(7)