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 brightness and contrast and gamma,
       and the density and saturation 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 correc-
	      tion.  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 cor-
	      rect 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 gener-
	      ally 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@whinlatter.uklinux.net)

SEE ALSO

       gimpprint-dithers(7),  gimpprint-imagetypes(7),	gimpprint-inktypes(7), gimpprint-mediasizes(7), gimpprint-mediasources(7), gimpprint-medi-
       atypes(7), gimpprint-models(7), gimpprint-resolutions(7).

Version 4.2.4							    25 Nov 2002 						GIMPPRINT-COLOR(7)