GIMPPRINT-COLOR(7)   Gimp-Print Manual Pages   GIMPPRINT-COLOR(7)



NAME
       gimpprint-color - Gimp-Print color balancing

DESCRIPTION
       Gimp-Print  includes  several  color  balancing  controls.
       These may be used to adjust the original  image's  bright-
       ness  and  contrast and gamma, and the density and satura-
       tion of the  output,  as  well  as  the  individual  cyan,
       magenta and yellow levels.

COLOR BALANCING
       Cyan

       Magenta

       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 rebalancing the levels.  Normally, these should
              be  adjusted to yield neutral gray, but they can be
              used for other effects.

       Brightness
              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.  Values 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 shadows turning black.

       Contrast
              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.

       Density
              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.

       Saturation
              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  getting 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 purposes, the
              saturation should generally be less than 1.5.

COPYRIGHT
       Copyright (C) 2001  Michael  Sweet  (mike@easysw.com)  and
       Robert Krawitz (rlk@alum.mit.edu)

       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 version 2 of the License, or (at your  option)  any
       later version.

       This  manual  page was written by Roger Leigh (roger@whin-
       latter.uklinux.net)

SEE ALSO
       gimpprint-dithers(7),    gimpprint-imagetypes(7),    gimp-
       print-inktypes(7),      gimpprint-mediasizes(7),     gimp-
       print-mediasources(7),   gimpprint-mediatypes(7),    gimp-
       print-models(7), gimpprint-resolutions(7).



Version 4.2.6              11 Jan 2004         GIMPPRINT-COLOR(7)