Photoshop CS2 All-in-One Desk Reference For Dummies- P15:Barbara Obermeier is principal of Obermeier Design, a graphic design studio in Ventura, California. She’s the author of Photoshop Album For Dummies, coauthor of Adobe Master Class: Illustrator Illuminated, Photoshop 7 For Dummies, and Illustrator 10 For Dummies. She has contributed as coauthor, technical editor, or layout designer for numerous books. Barb also teaches computer graphics at Brooks Institute; the University of California, Santa Barbara; and Ventura College | 398 Creating Effects with Blend Modes Table 3-4 Blend Modes That Invert Blend Mode Description Difference Produces a negative or inverted effect according to the brightness values on the top layers. If the pixels on the top layer are black the mode doesn t change the colors of the underlying layers. If the pixels on the top layer are white the mode inverts the colors of the underlying layers. Can produce bizarre results. Exclusion Similar to Difference but with less contrast and saturation. If the pixels on the top layer are black the mode doesn t change the colors of the underlying layers. If the pixels on the top layer are white the mode inverts the colors of the underlying layers. Medium colors blend to create gray. HSL color model blend modes These blend modes use the HSL Hue Saturation Lightness color model to mix colors. My favorite blend mode in this group is Color which allows you to apply color to images without obscuring the tonality. Table 3-5 lists these modes and Figure 3-7 shows their effects. Hue Saturation Color Figure 3-7 These blend modes use the Hue Saturation Lightness color model to mix colors. Luminosity Working with the Advanced Blending Options 399 Table 3-5 HSL Color Model Blend Modes Blend Mode Description Hue Blends the luminance brightness and saturation intensity of the color of the underlying layers with the hue color of the top layer. Saturation Blends the luminance and hue of the underlying layers with the saturation of the top layer. Color Blends the luminance of the underlying layers with the saturation and hue of the top layer. This mode is great for colorizing grayscale with a color mode set to RGB images because it preserves the shadows highlights and details of the underlying layers. Luminosity Blends the hue and saturation of the underlying layers with the luminance of the top layer. Preserves the shadows highlights and details from the top layer and mixes them with the colors of the underlying layers. The opposite of Color. .
