Adobe® Photoshop® 7.0 Classroom in a Book®

Creating a dithered transparency

In this section, you’ll create a dithered transparency for a graphic that will serve as the entry point from another Web page to the zoo map. By creating a dither from an opaque drop shadow to transparency, you’ll make it possible to create a smooth transition from the image to any color backdrop on the page without having to redo any work.

You’ll do this in two procedures. First, you’ll apply a drop shadow to the image. Then, you’ll add dithering to the drop shadow so that it blends into a background color for the Web page.

You can do this procedure in Photoshop or do it in ImageReady using the same controls but in slightly different locations.

Adding a drop shadow

The file you’ll be working on is intended ...