Now choose Edit > Fade Unsharp Mask to open the Fade dialog box. From the Mode pop-up menu, choose Luminosity (see Figure 4). We’re doing this so our sharpening is applied only to the luminosity of the photo (the detail areas) and not to the color in the image. By avoiding sharpening the color in the photo, we avoid some of the color halos and color artifacts (annoying little color specks) that sometimes appear when you sharpen the full-color image. The result is that we generally apply more sharpening without damaging the photo, so this is a good extra step.