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Painting with History
The example that I use here is very simple. It shows you how to use the History Brush by selecting a previous history state as a source. Here are the basic steps that I’ve taken to accomplish this:Apply a filter to an image.
Select the history state before the filter command as the source for the History Brush.
Use the History Brush to return portions of the image to its original appearance before the filter was applied.
Even though the example is simple, the principle always works the same: No matter how many history states are recorded in the History palette, you can use any history state as a source for the History brush. Just follow these steps:
Open an image that you want to use as the basis for painting with the History Brush.For this example, I’m using the ballerina photograph shown in Figure 25-2.
Figure 25-2: Select an image to use as the basis for a painting.
Choose File>Save As and save the image with another filename.
That way, your original image is not altered and is always available.
Make any tonal adjustments that you think necessary to improve the color and balance of the image.For the ballerina photograph, I increased the saturation and adjusted the highlights by using Levels.
Apply a filter to the image.For this example, I applied the Watercolor filter to the ballerina photograph, as shown in Figure 25-3.
Figure 25-3: The ballerina photograph looks quite different after the Watercolor filter is applied.
With the current history state selected in the History palette, click in the left column next to the previous history state, as shown in Figure 25-4.
Figure 25-4: Click the left column to select the previous history state as the source for the History Brush.
Be sure that you don’t select the previous history state.
Select the History Brush from the Toolbox.
Use the Brushes palette to select a brush tip shape.For the ballerina example, I selected a small round brush of medium hardness. (To find out more about the Brushes palette, turn to Technique 23.)
Use the Options bar to select History Brush settings.
Use the Mode drop-down list to select the Normal blending mode.
Set Opacity and Flow to 100%.
Experiment with different settings to see what kind of results you get.
Stroke in the image window with the History Brush.As you stroke, notice that the previous history state is revealed. For the ballerina example, I’m just stroking over the ballerina’s face and arms to return them to the state before the Watercolor filter was applied, as shown in Figure 25-5.
Figure 25-5: After stroking the ballerina’s face and arms with the History Brush, the skin tones are returned to the previous history state.
