Brushes in 7
page fourThe Dual Brush tab allows you to use two brush tips on the same brush. You can only set a few variables for the second tip, and I have not found many combinations that are of any use. However, it’s a cool idea. Please note that dual tips can really bog down your system.
As with Textures, the Mode that you choose has a big effect on how your brush looks. This blend mode setting determines how the second brush tip’s color will blend with the first tip’s application of the same color. The modes that I find most useful are Overlay and Color Dodge.
The sliders that you see for the second tip should be familiar. You get to set size, spacing, scatter, and count. Note that if you set a width that is larger than the size of your first brush tip, the imprint of the second tip will simply be cropped by the limits of the first tip’s diameter.
In the main Brush Presets tab, you may have noticed a Master Diameter slider at the bottom of the palette. You may also have noticed that it is always identical to the Diameter setting under Brush Tip Shape; altering one alters the other. You may have wondered what the heck is the point?
If you are using a Dual Brush, the Master Diameter slider will scale the Dual Brush tip. The Diameter slider in Brush Tip Shape will not. Therefore, if you want to change only the diameter of the first tip, use the slider in Brush Tip Shape. If you want to change both tips in proportion, use the Master Diameter slider.
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For the following illustrations, I set brush spacing to 100 % since color changes occur to successive tip imprints, not within single imprints. This way, you can see how each step of the jitter changes.
Starting at the top, the first example is Foreground/Background Jitter. My foreground color was bright red, and background color was bright green. I painted a zigzag. Contrary to the setting shown in the palette illustration at the bottom of this section (it shows Control set to Pen Pressure), my Control setting was Off, so pen pressure would not affect the colors.
Next is Hue Jitter, same colors. Remember, I am setting all other sliders to zero and the current one (in this case, Hue) to 100 %. Note also that the background color has no bearing on this result; it is using the foreground red color, only. At the max setting, I believe it pretty much uses every color in the rainbow.
And below is Saturation Jitter. At least this time you can see that it is using the foreground red color.
Brightness Jitter causes the black content mixed with the color to vary randomly.
The Purity slider is not for Jitter. It sets the saturation level for all colors that can appear as a result of any of the Jitter settings above. At minus 100, the only color you will get from any of the jitter settings is gray.
However, at a Purity setting of either minus 100 and plus 100, a Saturation Jitter setting of 100 has no effect. Intermediate Purity settings, allow Saturation Jitter to have limited effect while a Purity setting of zero allows Saturation Jitter to have maximum effect. Confusing.
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Copyright © 2004 by Jay Arraich.
All rights reserved.
All photographs copyright ©2004 by Jay Arraich
jay@arraich.com
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