At school, I use my PowerMac G5 to import all of the photos from our five cameras, disks, Dropbox links, etc. into our Dropbox. Once there, the photos sync to all of the other computers in the yearbook room for viewing and backup purposes over LAN. I then sort out the photos into folders and bring them into Preview and adjust the color using the auto adjustment button and occasionally use the other adjustment tools. Is there a PowerPC program available that won't crash when doing this to over 100 photos and will also allow me to batch select and do these actions rather than selecting each photo in Preview (on the sidebar), adjusting, and saving?