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MARCH 13, 2002 The Photoshop 7 Paint Engine, Part 2 Last week we began our in depth examination of new creative tools in Adobe Photoshop 7. We left off at the midpoint of the new Photoshop paint engine, which includes drastically improved parameters for creating brush strokes and painterly effects. So now we'll finish up with the paint engine and get into some more of the dynamics available for creating your paint strokes. We're essentially going down the line with the dynamics parameters in the Brush Presets palette. The last one we touched on was "Texture," so now we'll move on to "Dual Brush." (Incidentally, if you didn't have a chance to read Part 1 of this series, you can find it at http://www.creativemac.com/2002/03_mar/features/ps7dynamics1.htm.) [an error occurred while processing this directive] Dual Brush Dual Brush is a fascinating addition to Photoshop's repertoire of tools. As its name implies, it allows you to select a second brush tip to use in conjunction with your primary brush tip, adding variety and complexity to your stroke. It also allows you to control a number of parameters relating to the second tip. 
Included in these options is a choice of how the second tip blends with the primary tip. Ad here you have seven options: Multiply (default), Darken, Overlay, Color Dodge, Color Burn, Linear Burn and Hard Mix. You can see some examples of the differences below in these vertical strokes. 
With the Dual Brush option, you can select a second tip from among any of the currently loaded preset brush tips, including ones that you create yourself. Then, as with the primary brush tip, you can also adjust diameter, spacing, scatter and count, all of which provide for great variety in the look of your stroke.
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