Tritones Quadtones and Beyond

Theoretically, I could have skipped this section and simply told you that tritones and quadtones are just duotones with more colors. But there are plenty of Photoshop books that tell you that. Certainly, you can create tritones and quadtones in that way, but I'd be remiss if I didn't show you some of the things you can do. I won't be providing step-by-step instructions here, just some examples and an outline of what I did.

For example, Figure 9.21 is a quadtone using black, sepia, red, and a dark beige, with the Curves manipulated to partially invert some of the tones, as you can see in the first column of the dialog box in the figure. You can create some spectacular psychedelic effects using this feature.

Figure 9.21. Manipulate the Curves to get a psychedelic effect

Figure 9.21. Manipulate the Curves to get a psychedelic effect

Figure 9.22 is a more traditional quadtone, using one of the Pantone presets supplied with Photoshop. In the Duotone Options dialog box, click the Load button and navigate to the Presets folder in Photoshop, where you'll find some folders full of duotone/tritone/quadtone presets. I applied the preset to a portrait that had been dappled using one of Photoshop's filters. Although the subtle tones won't show up on this printed page, I wanted to mention this capability so you could experiment with the canned settings yourself.

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