The Desaturate tool is used to make the colors in a specific area of an image less vivid and vibrant. Using this tool, you can also take out all the color from a specific area to turn it black and white, while leaving the rest of the image in color.
In the Tool Options pane, customize the Desaturate tool:
Brush Size: Drag the Brush Size slider to adjust the size of the Desaturate tool brush. Hold down thekey to extend the range of the Brush Size slider beyond 100%. You can also manually enter a value from 0% to 200%.
Tip: You can use theand keys on your keyboard to change the size of the Desaturate tool brush.
Softness: Drag the Softness slider to adjust the softness of the edges of the Desaturate tool brush. With softer edges, the desaturated areas will usually blend in better with the rest of the image.
Strength: Drag the Strength slider to adjust the intensity of the desaturation effect.
Select a tonal range to desaturate:
Brush over the area of your image you’d like to desaturate.
Show Original: Click the Show Original button or press thekey on your keyboard to see what the image looked like before you desaturated anything in it.
Click Reset to discard all the current changes made with the Desaturate tool.