Canon G10 PowerShot G10 Camera User Guide - Page 186

184 z Red-eye correction cannot be performed on and RAW images. When shooting in [Record + ], red-eye correction can be performed on the JPEG image, but the original image cannot be overwritten. z Overwriting cannot be performed on protected images. z When there is not enough space left on the memory card, red-eye correction cannot be performed. z Although you can apply red-eye correction any number of times to an image, the image quality will gradually deteriorate with each application. z Since the correction frame will not appear automatically on images that have already been corrected once with the RedEye Correction function, use the [Add Frame] option to correct them.