What it does in photoshop...

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Posted by DiverD on May 21, 2005 at 12:46:48:

In Reply to: density? and 4 more pictures posted by Roger on May 21, 2005 at 10:09:59:

is increase your total ink density without interpolation, and/or adding information that isn't there. this allows you to remove and alter color non-destructivley, rather than simply pumping up the mids, adding information that isn't there, causing photoshop to interpolate, which ultimately destructs image information resulting in loss of detail.

The trouble with digital photos versus film photos is that digital photos do have similar densities in the shadow and highlights, it's the mids that are less dense, giving a tinny, less warm, less rich feel to the photo. Pumping up the mids gives a nice result because it preserves your shadows and highlights, but you are adding information thus potentially throwing away detail. Multiplying an image over itself pumps up all the ink while preserving your detail, but may result in oversaturated shadows and darker highlights.

So many color-science rules, theories, and maxiums, and yet color correction is still more art than science.

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