CroMagnum wrote:
I suspect that Aperture probably doesn't adversely affect an "edit" by overwriting the file imported into Aperture.
The file imported into Aperture is the master. The master is never modified in any way, all changes are applied to a image called the version which is a combination of the master and your changes. This version does not exisit as as an actual file on the HD unless you export it for use outside of Aperture.
What I meant was, if I import a file, "doctor" it to suit - then accidentally, or deliberately reimport the same image file again - whether I will be overwriting whatever changes I made & saved.
If you import the same master again it will be a duplicate image in Aperture with no connection to the original master or to any versions you created from the original master.
I gather that those edits are likely stored separate & nondestructively. Most usually, when I edit an image in PS, I wind up with one, two or three copies --- different treatments for the same image. I might be using a small version of an image, in which case I need to change the brightness to suit the size, etc. just as an web image might be manipulated depending on the presumed gamma value of the chosen audience's screens.
The same process occurs in Aperture except instead of three copies of the image you'll have three versions all based off the same master. When and if you need one of the versions outside of Aperture you export it as a JPG or TIFF file
Hope this helps,
regards