Adobe 29180155 User Guide - Page 213

ADOBE PHOTOSHOP ELEMENTS 4.0 208 User Guide Sharpen filters Sharpen and Sharpen More The Sharpen and Sharpen More filters increase clarity. Sharpen Adds moderate focus to a selection and improves its clarity. Sharpen More Adds stronger focus to a selection and improves its clarity. This filter applies a stronger sharpening effect than the Sharpen filter. Sharpen Edges The Sharpen Edges filter finds the areas in the image where significant color changes occur and sharpens them. The Sharpen Edges filter sharpens only edges while preserving the overall smoothness of the image. Use this filter to sharpen edges without specifying an amount. For professional color correction, use the Unsharp Mask filter to adjust the contrast of edge detail and produce a lighter and darker line on each side of the edge. This process emphasizes the edge to create the illusion of a sharper image. Unsharp Mask The Unsharp Mask filter reproduces a traditional film technique used to sharpen edges in an image. The Unsharp Mask filter corrects blurring introduced during photographing, scanning, resampling, or printing. It is useful for images intended for both print and online viewing. Unsharp Mask locates pixels that differ from surrounding pixels by the threshold you specify and increases the pixels' contrast by the amount you specify. In addition, you specify the radius of the region to which each pixel is compared. The effects of the Unsharp Mask filter are far more pronounced on-screen than in high-resolution printed output. If your final destination is printed output, experiment to determine what settings work best for your image. The Unsharp Mask filter adds contrast to reduce fuzziness. To use Unsharp Mask to sharpen an image 1 In the Editor, select an image, layer, or area. 2 Choose Filter > Sharpen > Unsharp Mask from the Styles And Effects palette or from the Filter menu. 3 Select the Preview option. 4 Set any of these options and click OK: Amount Determines how much to increase the contrast of pixels. For high-resolution printed images, an amount between 150% and 200% is usually best.