noise? without being where!!?
MORE INFO RELATING: I have my Photo Preview set to HALF Size in Preferences and the 1/2 of the set that I said were full size pics were the exact same size in MB as the Original as shown in Aperture.
I did this on 2 separate projects taken back in September...
....another thing i wanted to mention is that these Projects were auto created by selecting the option selected for Auto Photo Stream Import to projects.
If you drag the image out of Aperture you are not using the settings in the export pane you are getting the Aperture generated preview.
The size for the previews is set in Preferences. The reason you see different size files when you drag tie images out is most likely the result of having different size previews in Aperture.
One tidbit about preview sizes. If you change the preference for preview size, it only affects new previews. So any new images imported or existing images edited get the new size. Or if you force a new preview to be generated. (option-right-click an image and choose Generate Preview) All the other previews remain the size that they were originally created as.