Problem using Levels to adjust color balance in Photoshop CS (Windows)- Also see Adobe User Forums, Jul 3, 2005.

When running Photoshop CS on Windows 2000 Svc Pack 4, Photoshop CS does not Preview image midtone target color changes as expected. Any advice will be appreciated.

The Photoshop CS resident Help file gives instructions at the page: "Using Levels to set highlights, shadows, and midtones".

When following the Help instructions, adjustments in Target Midtone Color using the Adobe Color Picker do not preview as expected and don't seem to affect the image even when changes are saved. Clipping adjustments in %Shadow and %Highlight do preview immediately in the image.

To adjust color balance, the Help file says:
"Choose Image > Adjustments > Levels. Click Options in the Levels dialog box.
{I also selected Find Dark & Light Colors / Snap Neutral Midtones}
Click the Midtones color swatch to display the Adobe Color Picker. Enter the values you want to assign to the neutral gray, and click OK. This method has the advantage of showing you a preview of the values you're assigning."
However, I don't observe any changes in the image from those adjustments.

A similar tip posted by Bruce Fraser emphasizes the interactive adjustment: (http://www.creativepro.com/files/story_images/feature/17164-1.html) "As with the clipping percentages, changes to the target color are immediately reflected in the image, so the process is interactive."

This is a very good and a very usefull article. I have newly upgraded to Photoshop 7 and I wouldn't have considered using the Auto Color function except for having read this article.