Adobe 65064073 User Guide - Page 88
Compensate for lens vignetting, Heal spots and blemishes, Red/Cyan, Blue/Yellow, Defringe
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PHOTOSHOP LIGHTROOM 84 User Guide Original photo with blue/yellow fringing (left), and after fixing chromatic aberration (right). 1 Zoom in to an area near the corner of the photo. For the best results, the area should contain very dark or black detail against a very light or white background. Look for color fringing. 2 In the Lens Corrections panel of the Develop module, adjust one or both of the following sliders: Red/Cyan Adjusts the size of the red channel relative to the green channel. This compensates for red/cyan color fringing. Blue/Yellow Adjusts the size of the blue channel relative to the green channel. This compensates for blue/yellow color fringing. To see more clearly the color fringing you are trying to correct, press Alt (Windows) or Option (Mac OS) as you move a slider to hide any color fringe corrected by the other color slider. Defringe Choose All Edges to correct color fringing for all edges, including any sharp change in color values. If choosing All Edges results in thin grey lines or other undesired effects, choose Highlight Edges to correct color fringing only in the edges of highlighting where fringing is most likely to occur. Choose Off to turn off defringing. Compensate for lens vignetting Vignetting is a lens defect that causes the edges, especially the corners, of an image to be darker than the center. 1 In the Lens Corrections panel of the Develop module, move the Lens Vignetting Amount slider to the right (positive values) to lighten the corners of the image, or move the slider to the left (negative values) to darken the corners of the image. 2 Move the Lens Vignetting Midpoint slider to the left (lower value) to apply the Vignetting Amount adjustment to a larger area away from the corners, or move the slider to the right (higher value) to restrict the adjustment to an area closer to the corners. Note: Vignetting adjustments work for the original uncropped image edge only. Heal spots and blemishes The Remove Spots tool lets you repair a selected area of a photo with a sample from another area. When removing spots, you use two connected circles: the spot circle indicates which area will change, and the sample circle determines which area of the photo is being used to clone or heal the spot. 1 In the Develop module, select the Remove Spots tool from the toolbar.