Greetings, I've just been playing with the Shadow/Highlight tool in CS to make some sense of the various settings and thought I'd share my findings.
I created a step wedge producing 11 bands of grey from 0% to 100% black. I then applied the S/H tool at various settings and noted the change in density using the Info Palette. It turns out that the tonal width setting is quite accurate. In practice, if I wanted to lighten the shadows, I'd click on the lightest part of the image that I wanted affected using Curves (displaying 10% increments), and transfer that value to the tonal width setting. Amount would be adjusted by eye. When lightening shadows, pure black remains pure black. Other than pure black, the darkest areas receive the greatest degree of lightening and this tapers off to no increase when you exceed the tonal width. I'm not sure about the pixel width yet (obviously had no effect on the wedge) -- that'll depend on subject matter. Great tool ! Paul Deverson Witney, Oxon +44(0)7775 857790 =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
