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 Sony Artisan and Windows
Apr 21, 2004 7:52 PM
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articles

Shadow/Highlight Command
Friday October 3, 2003

Section 1: Shadow/Highlight Command

A new feature in CS is the Shadow/Highlight command found under "Image-Adjust" menu. The initial uses according to Adobe are to deal with backlit images or those that have been washed out. What's unique about this function is that it uses surrounding pixels within the image to base its corrections upon.

As seen in figure 1, the dialog is broken down into three parts (be sure the "Show More Options" check box is on). The first two areas of the dialog (Shadows and then Highlights) behave the same way but obviously affect different parts of the tone scale. The sliders work much like those found in the Unsharp Mask filter where Amount controls the degree of correction ranging from zero (no correction) to 100%. Tonal Width sets the amount of pixels that are modified within a tonal range being affected and works directly with the Amount slider. Radius controls a range of neighboring pixels to be affected within the tonal width so think of this as a way of controlling a feather or falloff of the resulting tonal tweak.

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    4/18/04 at 9:00 AM to 4/24/04
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