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#### Applying the Sketch Effect

You can use the Sketch effect to convert an image to a black and white pencil sketch.

The Sketch effect.

To apply the Sketch effect

| 1 |  | Select a layer or area of the canvas.

|  | If you want to apply the effect to the entire image, do not make a selection.

| 2 |  | Choose Effects > Surface Control > Sketch.

| 3 |  | In the Sketch dialog box, adjust any of the following sliders:

| • |  | Sensitivity - determines sensitivity to detail. Low values detect only the main edges. High values detect the main edges as well as thin lines, such as the lines around a person's eyes.

| • |  | Smoothing - determines how much noise is filtered out. Higher values result in wider, lighter, and blurrier lines.

| • |  | Grain - determines how much of the paper grain is revealed in the sketch marks. Move this slider to the right to show more of the paper grain.

| • |  | Threshold - removes noise after edge detection. Threshold High is used to flag light pixels which may be just noise in the image. Threshold Low is used to test surrounding pixels.

|  | If you want to save your settings as a preset, click Save and specify a preset name in the Save Preset dialog box.

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