Adobe Photoshop CS4 - Manual (Page 165)

158 USING PHOTOSHOP CS4
Color and tonal adjustments
Last updated 1/10/2010
View color information while adjusting color
You can view color information for specific pixels in the image while adjusting color with an adjustment dialog box or
the Adjustments panel.
1 Open an adjustment dialog box (under Image > Adjustments) or add an adjustment using the Adjustments panel.
2 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 an adjustment dialog box, the Eyedropper tool is activated (and other tools temporarily
disabled) when you move the pointer over the image. You still have access to the scroll controls and to the Hand and Zoom
tools using 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, do one of the following:
• If using the Adjustments panel, select the Color Sampler tool and click in the image, or select the Eyedropper tool
and Shift-click in the image.
• If using an adjustment dialog, Shift-click in the image.
Adjusting color samplers
Once you’ve added a color sampler, you can move or delete it, hide it, or change the color sampler information
displayed in the Info panel.
Move or delete a color sampler
1 Select the Color Sampler tool .
2 Do one of the following:
• To move a color sampler, drag the sampler to the new location.
• To delete a color sampler, drag the sampler out of the document window. Alternatively, hold down Alt (Windows)
or Option (Mac
OS) until the pointer becomes a scissors and click the sampler.
• To delete all color samplers, click Clear in the options bar.
• To delete a color sampler while an adjustment dialog box is open, hold down Alt+Shift (Windows) or Option+Shift
(Mac
OS), and click the sampler.
Hide or show color samplers in an image
❖ Choose View > Extras. A check mark indicates that color samplers are visible.
Change the display of color sampler information in the Info panel
• To display or hide color sampler information in the Info panel, choose Color Samplers from the panel menu. A
check mark indicates that the color sampler information is visible.
• To change the color space in which a color sampler displays values, move the pointer onto the color sampler
icon
in the Info panel. Then, hold down the mouse button, and choose another color space from the menu.