i have 15.1gb worth of photos stored in iphoto. however, when i pull up my library in finder it shows 21.8gb. apparently this is because iphoto stores the original file in addition to the cropped/edited file. while i no longer do any cropping or anything like that in iphoto, up until last year i did. so my question is, to 'get back' that extra 7gb of space, can i export the photos, delete my iphoto library, then import the photos back? or are the exported files still the same as the original? thanks!