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Workflow Technique #012"S-Curves revisited "
note by
Uwe Steinmueller
Sponsored by
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| Some time ago we looked at improving contrast by using S-Curves. We also found that this could improve saturation. But what if we want improved contrast and no saturation boost (actually means shifted colors). |
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| Instead of using S-Curves directly we create an adjustment layer with curves and use our p3 curve (see here) |
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| While enhancing the contrast we also get a yellow color shift which we do not want in this case. |
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We can remove the color shift by changing the blending mode of the adjustment layer from "normal" to "Luminosity". Unfortunately layers only work with 8-bit but also gives us much more control. Note: the subtle changes are hard to see on small images and on the web. Best you try it yourself with an image that needs a bit contrast boost. |
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