On Jul 13, 2010, at 5:27 PM, Godfrey DiGiorgi wrote: > Only if YOU maintain an original, unedited copy of the image file, or > if the image file is a raw file (which Adobe Camera Raw considers to > be a read-only file). > > - Pixel editors push around the pixels in the file you open with them, > so any time you open a file and make a change to it, then save, the > file is no longer as it was and cannot be recovered. That is called > "destructive editing". Working with raw files differs in that the raw > conversion plugin considers the original raw file to be read-only so > it renders a new converted file for editing and leaves the original > file in place. > > - Lightroom, iPhoto and Aperture all do parametric editing ... the > original file (raw, JPEG, TIFF, whatever) is saved and read, they > generate previews to show you what your editing operations are. To > obtain a new, finished file containing all your edits, you export from > these three applications new, finished files. The originals are always > untouched.
Thanks again, Godfrey. I think this answers the questions I asked in my response to your previous post. ------------------------------------------------------------------------------------------ Eric Weir Decatur, GA USA [email protected] -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
