Selection Brush Tool Painting pixel selections

Using the Selection Brush Tool you can define a selection by painting on your page.

Default Selection Brush 'expansion' behaviour

By default the Selection Brush Tool is set to expand the selection to include similar colour value pixels to those selected, even if these are not directly painted. In other words, the selection will grow up to high contrast edges within the image.

Before
After
Before and after selection painted.

The number of pixels selected is determined by the size (width) of the brush in two ways:

This makes selecting an area of similar colour and tone effortless.

Alternative 'non-expansion' behaviour

As an alternative to the expansion method detailed above, the Selection Brush Tool also has a non-expansion method of selection. This method will only select pixels which are under the brush when the stroke is painted.

Non-expansion
Expansion
Difference in selection method between non-expansion (before) and expansion (after).
Selection Brush Tool To create a pixel selection:

With the Selection Brush Tool selected:

  1. Adjust the context toolbar settings. (See Selection Brush Tool for details.)
  2. Drag on your page.
Selection Brush Tool To refine a pixel selection:

With the Selection Brush Tool selected, do any of the following:

See the note below for details.

Selection Brush Tool To set 'non-expansion' method:

SEE ALSO: