The Invert command reverses the colors and tonal values to their opposite values; in effect creating a negative. The Equalize command exaggerates the contrast between similar color values. It's useful in finding stray pixels in a seemingly solid color area, or for a special color effect.
Image menu, point to
Adjustments , and then click
Invert .
The brightness values of each image channel are reversed, creating a negative color or grayscale image.
Image menu, point to
Adjustments , and then click
Equalize .
The brightness values of the image pixels are distributed in a way that more accurately represents the entire range of brightness levels from white to black.
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