Hello! I use photo publishing sites Shutterfly, Mixbook, and Picaboo to make photo books and calendars. i have noticed that for all of these sites since I switched to a MAC from a windows PC that the picture quality is greatly lessened when the items are printed. I use a Nikon DSLR camera, so I know it's not the picture quality from my camera. The files are being shrunk when uploaded to the sites. Can anyone tell me how to change the settings on this MAC so original file sizes are uploaded? BTW - I even made a calendar using the option in I-Photo and printed by Apple to see if the picture quality would be better and it wasn't. Thank you!