Difference between iPhoto and Aperture and photo storage
I'm thinking about upgrading from iPhoto to Aperture but I'm a little confused about the differences in the way photo edits are handled. The iPhoto to Aperture page says that Aperture stores photo changes in one photo rather than duplicating them, therefore taking up less space. BUT they also use a unified shared library. So how is it possible for Aperture to handle edits differently if the library is now shared between the two applications?