Curves vs. Shadow/Highlight

One of the advantages of the new Shadow/Highlight command being touted in the current PEI magazine is the lack of banding/posterization when compared to using curves, demonstrated by comparing the histograms between each operation. When using curves, combing is seen in the histogram, but not when using S/H.

However, in my test image, I notice the combing generated by curves disappears when I accept the changes (or flatten if using a curves adjustment layer).

Does this negate this particular advantage for S/H?

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- Doug Nelson

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http://www.retouchpro.com -- the #1 online community for retouchers and restorers

Different worlds, IMHO. I cannot attain the same results such that Curves=S/H. I use both, somtimes in tandem, many times with Levels.

If you work 16 bit, the combing also disappears.

Thanks, Lawrence.

Does anyone else have any information on this?

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- Doug Nelson

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http://www.retouchpro.com -- the #1 online community for retouchers and restorers