Why You Need Smooth Brushesthe Clone Tool

The Clone Tool uses image data and patterns to "draw" not only colors, but also color structures. These structures are actually pieces of your image that you previously copied from a defined area in the same image. This tool is capable of doing more than just working with "normal" opacity. Since you can set the tool's opacity from opaque to transparent, you can use this glazing technique to create smooth transitions, using a soft, feathered pointer. The Clone Tool is considered "the" touchup tool.

The Clone Tool uses the same brush pointers available to the drawing tools. Choosing Windows > Dockable Dialogs > Brushes, you will find brush pointers with hard, sharp edges that draw like pens with fixed widths as well as pointers with soft edges or feathering that draw more like a paint brush, with rich color in the center that fades as it moves toward the edges. Moreover, there are brush pointers in the form of patterns that apply color in structures.

For this exercise, you will use the Clone Tool with "soft" pointers. Brushes with hard edges will create image patterns with sharp edges: this may be acceptable for a single color, but if you are working with structures, even similar structures, the image would appear as if it had been strewn with confetti. A softer brush pointer creates a smooth transition.

Because GIMP doesn't come with a large array of brushes, it provides a simple way to create new brushes. You should create a certain choice of additional brush pointers in advance so that you can change a pointer quickly when you're working. Once you have created a brush, you can save and reuse it.

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