Adobe Photoshop CS4 - Manual (Page 161)

154 USING PHOTOSHOP CS4
Color and tonal adjustments
Last updated 1/10/2010
Histogram panel
A. Channel menu B. panel menu C. Uncached Refresh button D. Cached Data Warning icon E. Statistics
Adjust the view of the Histogram panel
❖ Choose a view from the Histogram panel menu.
Expanded View Displays the histogram with statistics. It also displays: controls for choosing the channel represented
by the histogram, viewing options in the Histogram panel, refreshing the histogram to display uncached data, and
choosing a specific layer in a multilayered document.
Compact View Displays a histogram with no controls or statistics. The histogram represents the entire image.
All Channels View Displays individual histograms of the channels in addition to all the options of the Expanded View.
The individual histograms do not include alpha channels, spot channels, or masks.
Histogram panel with all channels displayed and statistics hidden
A B
C
D
E