Thanks to this lite applicationn we'll be able to do it automatically.
FreeVimager is a free image viewer and editor that allows yout o modify pictures in an easy and successful way.
It supports a wide range of formats. You can adjust brightness, contrast, size, focus, etc. You will be abe to undo red eye effect and check EXIF information.
Finally, you'll be able to create slideshows and presentations just selecting them and clicking a button. It's easy and results are pretty good.