Справочник Пользователя для Adobe photoshop cs2

ADOBE PHOTOSHOP CS2 

You can preview the effect to the histogram of any color and tonal adjustments.

❖ 

Select the Preview option in the dialog boxes of any color or tonal adjustment command.

The Histogram palette displays a preview of how the adjustment affects the histogram.

When a histogram is read from a cache instead of the document’s current state, the Cached Data Warning icon 
appears in the Histogram palette. Histograms based on the image cache are displayed faster and are based on a repre­
sentative sampling of pixels in the image. You can set the cache level (from 2 to 8) in the Memory And Image Cache 
preference. 

❖ 

To refresh the histogram so that it displays all of the pixels of the original image in its current state, do one of the 

following: 

Double-click anywhere in the histogram. 

Click the Cached Data Warning icon 

. 

Click the Uncached Refresh button 

. 

Choose Uncached Refresh from the Histogram palette menu. 

For information about cache level, see “To view histogram statistics” on page 278. 

You can  use the  Info  palette and  the Color  palette to see  the color  value of pixels as you  make  color corrections. This  
feedback is useful while you make color adjustments. For instance, referring to the color values can help when 
neutralizing a color cast or can alert you that a color is saturated. 

When you work with a color adjustment dialog box, the Info palette displays two sets of color values for the pixels 
under the pointer. The value in the left column is the original color value. The value in the right column is the color 
value after the adjustment is made.