View Color Values In An Image; View Color Information While Adjusting Color - Adobe Photoshop CS6 User Manual

Click the Cached Data Warning icon
Click the Uncached Refresh button
Choose Uncached Refresh from the Histogram panel menu.
For information about cache level, see Histogram panel overview.

View color values in an image

You can use the Info panel to see the color value of pixels as you make color corrections. When you work with the Adjustments panel (CS5) or
Properties panel (CS6), the Info panel 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.
Using Levels and Info panel to neutralize the tone of an image
You can view the color of a single location using the Eyedropper tool
information for one or more locations in the image. These samplers are saved in the image, so you can refer to them repeatedly as you work, even
if you close and reopen the image.
Color samplers and Info panel
1. Choose Window > Info to open the Info panel.
2. Select (then Shift-click) the Eyedropper tool
Sample reads the value of a single pixel, other options read the average of a pixel area.
3. If you selected the Color Sampler tool

View color information while adjusting color

You can view color information for specific pixels in the image while adjusting color in the Adjustments panel (CS5) or Properties panel (CS6).
1. Add an adjustment using the Adjustments panel.
2. Make adjustments in the Adjustments panel (CS5) or the Properties panel (CS6) As you make adjustments, view the before and after color
values in the Info panel. Move the pointer over the image to view color values at the pointer location.
Note: If you are using a command from the Image > Adjustments menu, the Eyedropper tool
disabled) when you move the pointer over the image. You still have access to the scroll controls and to the Hand and Zoom
keyboard shortcuts.
3. If you've placed color samplers on the image, the color values under the color samplers appear in the lower half of the Info panel. To add
new color samplers, select the Color Sampler tool and click in the image, or select the Eyedropper tool and Shift-click in the image.
.
.
or Color Sampler tool
, place up to four color samplers on the image. Click where you want to place a sampler.
. You can also use up to four Color Samplers
, and if necessary, choose a sample size in the options bar. Point
to display color
is activated (and other tools temporarily
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