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    Ensure print-friendly colors with the Photoshop Gamut Warning

    | Photoshop Tutorials | Tutorials | 21/06/2012 15:09pm
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    Photoshop Gamut Warning: before

    Before

    Photoshop Gamut Warning: after

    After


    Your computer mixes Red, Green and Blue (RGB) channels together to produce millions of different colours. Printers combine Cyan, Magenta, Yellow and Black (CMYK) inks to create a more limited colour palette. On-screen colours that can’t be reproduced in print are called ‘out of gamut’ (or out of range) colours.

    Although Elements users can produce more print-friendly colours using the Adobe RGB colour space, you can still boost colour saturation to accurately reproduce them.

    Photoshop CS users have tools to help them keep edited colours within a printable range, like the CMYK mode and an out-of-gamut warning. Here, we’ll show you how to use these more advanced CS tools.

    Photoshop Gamut Warning: choose a color space

    Step 1: Choose a colour space
    Photoshop CS users can follow steps 1 to 4 in the main walkthrough to tweak the start image in CS’s Camera Raw editor. Once you’ve clicked Open Image, go to Edit>Colour Settings. In Working Spaces, set the RGB menu to Adobe RGB (1998) to work in a printer-friendly colour space. Click OK.

    Photoshop Gamut Warning: tick gamut warning

    Step 2: Gamut Warning
    Add a Hue/Saturation Adjustment Layer, boost the Blues Saturation to +57 and set Hue to +20. Go to Window and tick Gamut Warning. Most of the sky will turn a patchy grey, indicating these colours are out of a printer’s range. Drop the Blues Saturation down to +35 to reduce the gamut warning patches.

    Photoshop Gamut Warning: edit the mask

    Step 3: Edit the mask
    Follow steps 7 to 9 to boost the colour saturation of the Cyans, Reds and Yellows. This will add more gamut warning patches to parts of the scene. You can reduce the intensity of the colour saturation by dropping the Adjustment Layer’s Opacity to 80%.

    Photoshop Gamut Warning: change mode

    Step 4: Change mode
    To force Photoshop CS to use printer-friendly colours go to Image>Mode>CMYK Colour. Click Flatten, then OK to choose a CMYK profile. The gamut warning patches will vanish, and the colours 
on screen will be more similar to those in print.

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    Posted on Thursday, June 21st, 2012 at 3:09 pm under Photoshop Tutorials, Tutorials.

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