2012年10月15日星期一

Creating Custom Brushes in Photoshop


Creating Custom Brushes in Photoshop

Creating your own custom brush is really quite easy:
Open an image, any image.
Select all or part of the image.
Go to Edit –> Define Brush Preset.
Voila! New brush…
You can use anything from scanned textures, photographs, or drawings to make new brushes. The real key to creating a brush is understanding how they work and finding the right settings. In this tutorial, I’ll give you a few tips and show you how to create some specific brushes to get you started.Tips for Making Great Brushes
Sure, you can use any image to create a brush, but the there are definitely some notes you should consider before you start.
Brushes are grayscale.
If you use a color image to define a brush preset, you will notice that the color information is discarded. In a brush shape, the opacity of each pixel is determined by how black it is. Black pixels are opaque, and white is transparent.
High contrast is better.
Because the opacity is determined by black and white, you can get more variety from your brush if you use a high contrast image. If your image is all gray, your brush will turn out to be a big blobby mess.
Use the right size.
When creating a brush, I like to use an image that is around 600 pixels wide. This is because I usually don’t use brushes over 300 pixels wide, but it still gives me room if I want to go bigger.
Settings to Consider
Open your Brush palette (Window–>Brushes) and you will see a bunch of settings you can use to make your brush just right. You can see their specific settings by clicking directly on the categories on the left side of the window. There are a few of these that I almost always change, or at least experiment with, when creating a brush.
Spacing
You can find this under “Brush Tip Shape” at the very bottom of the window. You will almost always want this turned on. Use the slider to change the spacing between your shapes in your stroke. A lower value will give you a smooth stroke, while a higher value will “dot” the brush tip shape along your stroke.
Spacing setting
Angle and Roundness
You can change your brush shape is oriented. It is right above the Spacing settings. Click and drag the arrow on the circle to change the angle. Click and drag the dots to squish your shape.
Angle and roundness settings
Angle Control
This is also in the Shape Dynamics section. Sometimes it will help to change the drop-down menu to “Direction.”
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