4 Do the following in the options bar:

•Choose a Limits mode for erasing: Discontiguous to erase the sampled color wherever it occurs under the brush; Contiguous to erase areas that contain the sampled color and are connected to one another; Find Edges to erase connected areas containing the sampled color while better preserving the sharpness of shape edges.

•For Tolerance, enter a value or drag the slider. A low tolerance limits erasure to areas that are very similar to the sampled color. A high tolerance erases a broader range of colors.

•Select Protect Foreground Color to prevent the erasure of areas that match the foreground color in the toolbox.

•Choose a Sampling option: Continuous to sample colors continuously as you drag; Once to erase only areas containing the color that you first click; Background Swatch to erase only areas containing the current background color.

5 Drag through the area you want to erase. The background eraser tool pointer appears as a brush shape with a cross hair indicating the tool’s hot spot .

Using the Auto Erase option

The Auto Erase option for the pencil tool lets you paint the background color over areas containing the foreground color.

To use the Auto Erase option:

1Specify foreground and background colors. (See “Choosing foreground and background colors” on page 257.)

2Select the pencil tool .

3Select Auto Erase in the options bar.

4Drag over the image.

If the center of the cursor is over the foreground color when you begin dragging, the area is erased to the background color. If the center of the cursor is over an area that doesn’t contain the foreground color when you begin dragging, the area is painted with the foreground color.

Using the art history brush tool (Photoshop)

The art history brush tool lets you paint with stylized strokes, using the source data from a specified history state or snapshot. By experimenting with different paint style, size, and tolerance options, you can simulate the texture of painting with different colors and artistic styles.

Like the history brush, the art history brush uses a specified history state or snapshot as the source data. The history brush, however, paints by recreating the specified source data, while the art history brush uses that data along with the options you set to create different colors and artistic styles.

For a variety of visual effects, experiment with applying filters or filling an image with a solid color before painting with the art history brush tool. Also try increasing the size

of the image by a factor of 4 to soften the details.

A B

C D

Example of using the art history brush tool:

A. Original B. White fill C. Large brush D. Small brush

To use the art history brush tool:

1In the History palette, click the left column of the state or snapshot to use as the source for the art history brush tool. A brush icon appears next to the source history state.

2Select the art history brush tool .

3Do the following in the options bar:

•Choose a brush and set brush options. (See “Working with brushes” on page 228.)

•Specify a blending mode and opacity for the paint. (See “Setting options for painting and editing tools” on page 241.)

•Choose an option from the Style menu to control the shape of the paint stroke.

•For Area, enter a value to specify the area covered by the paint strokes. The greater the size, the larger the covered area and more numerous the strokes.

•For Tolerance, enter a value or drag the slider to limit the regions where paint strokes can be applied. A low tolerance lets you paint unlimited strokes anywhere in the image. A high tolerance limits paint strokes to areas that differ considerably from the color in the source state or snapshot.

4 Drag in the image to paint.