1. A red eye compensation method comprising: storing, when original image data is subjected to image processing and image data for outputting is generated and outputted, at least one of the original image data and the image data for outputting in storage means; reading out, when an instruction was issued for red eye compensation of an image of previously outputted image data for outputting, one of the image data for outputting and corresponding original image data from said storage means; and performing said red eye compensation on the read-out image data to regenerate the image data for outputting.