Adobe 29180155 User Guide - Page 197

ADOBE PHOTOSHOP ELEMENTS 4.0 192 User Guide 4 To adjust the amount of color applied to the image, use the Density slider or enter a percentage in the Density text box. A higher Density applies a stronger color adjustment. 5 Click OK. See also "About filters" on page 183 "To adjust the color of skin tone" on page 138 "To apply a filter" on page 185 Posterize The Posterize filter lets you specify the number of tonal levels (or brightness values) for each channel in an image and then maps pixels to the closest matching level. For example, choosing two tonal levels in an RGB image gives six colors, two for red, two for green, and two for blue. This command is useful for creating special effects, such as large, flat areas in a photograph. Its effects are most evident when you reduce the number of gray levels in a grayscale image. But it also produces interesting effects in color images. If you want a specific number of colors in your image, convert the image to grayscale and specify the number of levels you want. Then convert the image back to the previous color mode, and replace the various gray tones with the colors you want. To apply the Posterize filter 1 In the Editor, select an image, layer, or area. 2 Do one of the following: • Choose Filter > Adjustments > Posterize. • Create a new Posterize adjustment layer, or open an existing Posterize adjustment layer. 3 Enter the number of tonal levels you want, and click OK. See also "About filters" on page 183 "To apply a filter" on page 185 "About adjustment and fill layers" on page 95 Threshold The Threshold filter converts grayscale or color images to high-contrast, black-and-white images. You can specify a certain level as a threshold. All pixels lighter than the threshold are converted to white; and all pixels darker are converted to black. The Threshold command is useful for determining the lightest and darkest areas of an image. (See "To apply the Equalize filter" on page 189.) To apply the Threshold filter 1 In the Editor, select an image, layer, or area.