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Thread: How to rescue out of gamut colors?

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    Default How to rescue out of gamut colors?

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    The color of the green lily pads in this image may appear a little funky on a monitor but they are still green, but when they are printed on an HP Photosmart 8050 they are bright blue. Most other images print with reasonably accurate rendering of colors.
    Using Photoshop View/proof colors (cntrl Y) on a calibrated monitor the pads still appear green, but more muted.
    Select/color range/out of gamut shows that the lily pads are out of gamut.
    What is the best way to approach getting the colors back into the color space where they will print as green?

  2. #2
    Robert O'Toole
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    Usually this is a case of the printer software correcting or in this case causing problems. Make sure all the printer correction is turned off.

    Robert

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    Changing rendering intent may work, but only if the colors are slightly out of gamut. The easiest way is to reduce the saturation. If you only want to selectively reduce the saturation of the leaves, do it as a separate layer with a mask.

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    Whether out of gamut or not, if the greens are coming out blue, you've either got the wrong paper progile in there or the printed is applying it's own color thoughts to the image file before printing OR...you have one or more clogged jet(s) in the printer.

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    Thanks for the suggestions--

    The printer is not making further adjustments as best I can tell. All of the enhancement features are turned off.
    The same results are obtained with a new cartridge, so I don't think it is a plugged jet.

    The printer is doing the color management based on receiving an Adobe RGB file. The check gamut monitor view used a U.S. Web coated (SWOP) v2 profile (which is probably only similar to what the printer is actually using, but should give an indication of what might be out of gamut).

    Masking the lily and reducing the saturation or brightness seems to help. I am still fiddling around with rendering intent, but I am still curious if there is a numerical way to adjust saturation or other appropriate adjustment layer to fix the problem, rather than trial & error.:confused:

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    Rendering Intent should be either Perceptual or Relative Colorimetric. Instead of the SWOP profile, select Custom and then select the profile for your printer and paper. That should give you a more realistic approximation when you view the Gamut Warning.

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