If you select a custom color, your print service provider can more easily provide the proper ink to reproduce the image. For more information, see "Choosing custom colors (Photoshop)" on page 263.
5 For Solidity, enter a value between 0% and 100%.
This option lets you simulate on-screen the solidity of the printed spot color. A value of 100% simulates an ink that completely covers the inks beneath (such as a metallic ink); 0% simulates a transparent ink that completely reveals the inks beneath (such as a clear varnish). You can also use this option to see where an otherwise transparent spot color (such as a varnish) will appear.
Note: The Solidity and color choice options affect only the on-screen preview and the composite print. They have no effect on the printed separations.
6 To enter a name for the spot channel, choose a custom color in step 4, and the channel automatically takes the name of that color.
Be sure to name spot colors so they'll be recognized by other applications reading your file. Otherwise the file might not print.
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Adobe Photoshop can be a complex tool only because you can do so much with it, however for in this video series, we're going to keep it as simple as possible. In fact, in this video you'll see an overview of the few tools and Adobe Photoshop features we will use. When you see this video, you'll see how you can do so much with so few features, but you'll learn how to use them in depth in the future videos.