Like diplomacy, photography is often the art of the possible. You may not always get the chance to set up the perfect shot when taking your photos. Sometimes, this will mean you will not notice problems until afterward. For example, you might have a photo of a person wearing glasses that has glare problems. If you have the freeware graphics and photo-editing application, GIMP, you can often fix this flaw. This only works if the glare is not too large.
Load the photo you want to edit onto your computer.
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Start the GIMP application. Click "File" in the menu at the top and click "Open." Go to, and open, the photo you loaded.
Select the "Cloning" tool from the toolbar. Go to the glare area, hold down the "ALT" key and click on a clear section under the glasses to select a reference point that best matches a part of the glare you want to fix. Use the tool to paint over that area.
Hold down the "ALT" key and select another reference point that matches another area under the glare. Paint that area as well. Continue this process until you have replaced the glare pixels. Save your work.