Ordinarily, a tool affects your entire photo. Using a color/luminosity selection, you can restrict a tool’s effect to just a selected hue or luminosity range.
Additionally, color/luminosity selections have adjustable feathering thus eliminating sharp edges between where a selection is and isn’t.
To make a color/luminosity selection:
- Select the tool that you want to make a color/luminosity selection for by clicking its title bar.
- Click the Color Selection tab to reveal the color/luminosity selection controls.
- Click the eyedropper button. (The mouse will change to an eyedropper.)
- To select only by hue, uncheck the Enable luminosity checkbox; to select only by luminosity, uncheck the Enable hue checkbox.
- Click somewhere on your photo that is either the color or luminosity you want to select. (The color/luminosity selections as well as the Color Selection Viewer will update to reflect the selected color/luminosity.)
- Optionally, adjust the Range slider to increase or decrease the range of hues selected around the color shown by the color swatch.
- Optionally, adjust the Luminosity range sliders to affect the part of the selected luminosity range.
- To select all colors except the selected color, click the Invert checkbox.
- If you are satisfied with the color/luminosity selection, click the eyedropper button again to complete the selection.