Applying special color effects to images

The Desaturate, Invert, Equalize (Photoshop), Threshold (Photoshop), and Posterize (Photoshop) commands change colors or brightness values in an image but are typically used for enhancing color and producing special effects, rather than for correcting color.

Note: You can also make color adjustments by blending colors from different channels. (See Mixing color channels (Photoshop).)

Related Subtopics:

Using the Desaturate command
Using the Invert command
Using the Equalize command (Photoshop)
Using the Threshold command (Photoshop)
Using the Posterize command (Photoshop)
Using the Gradient Map command (Photoshop)