Step 2: This photo was shot with a Nikon D700 and the Nikon 14-24mm f/2.8G ED AF-S lens. Sometimes the Auto Correction tool will find the correct profile automatically based on your picture’s metadata, but if it doesn’t, use the pulldown menus under Search Criteria to locate the right profile. Clicking on it will improve your image. Notice how the vertical metal poles and the horizontal shelves appear much straighter. The default settings leave the boxes for Chromatic Aberration and Vignette unchecked, but try clicking them to see whether they make your shot look better. In this case, the vignetting removal was much too strong.