Enhance an image automatically

You use the Auto Enhance button when you want to quickly improve your image or preview what the image will look like when adjusted. When you click the Auto Enhance button, Aperture evaluates the image and then applies the White Balance, Enhance, Curves, and Highlights & Shadows adjustment settings in a manner that suits the selected photo. Using Auto Enhance is a good starting point when adjusting an image because you can always fine-tune the parameter settings for each adjustment.