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ADOBE PHOTOSHOP CS2
User Guide
To use the Variations command
The Variations command lets you adjust the color balance, contrast, and saturation of an image by showing you
thumbnails of alternatives.
This command is most useful for average-key images that don’t require precise color adjustments. It does not work
on indexed-color images or 16-bit-per-channel images (Photoshop).
1
Choose Image > Adjustments > Variations.
The two thumbnails at the top of the dialog box show the original selection (Original) and the selection with its
currently selected adjustments (Current Pick). When you first open the dialog box, these two images are the same.
As you make adjustments, the Current Pick image changes to reflect your choices.
2
Select the Show Clipping option if you want to display a preview of areas in the image that will be clipped—
converted to pure white or pure black—by the adjustment. Clipping can result in undesirable color shifts, as distinct
colors in the original image are mapped to the same color. Clipping does not occur when you adjust midtones.
3
Select what to adjust in the image:
Shadows, Midtones, or Highlights
Adjusts the dark, middle, or light areas.
Saturation
Changes the degree of hue in the image. If you exceed the maximum saturation for a color, it may be
clipped.
4
Drag the Fine/Coarse slider to determine the amount of each adjustment. Moving the slider one tick mark doubles
the adjustment amount.
5
Adjust the color and brightness:
•
To add a color to the image, click the appropriate color thumbnail.
•
To subtract a color, click the thumbnail for its opposite color. For example, to subtract cyan, click the More Red
thumbnail. See “Using the color wheel” on page 248.
•
To adjust brightness, click a thumbnail on the right side of the dialog box.
The effects of clicking the thumbnails are cumulative. For example, clicking the More Red thumbnail twice applies
the adjustment twice. Each time you click a thumbnail, the other thumbnails change. The three Current Pick thumb
nails always reflect the current choices.
You can also save the settings you make in the Variations dialog box for reuse on other images. For more information
on saving and loading settings, see “To save and reapply settings in a dialog box” on page 282.
To use the Equalize command
The Equalize command redistributes the brightness values of the pixels in an image so that they more evenly
represent the entire range of brightness levels. Equalize remaps pixel values in the composite image so that the
brightest value represents white, the darkest value represents black, and intermediate values are evenly distributed
throughout the grayscale.
