New answers tagged backup
You can save DNG if you want, but you can also save RAW+XMP. (which would take significantly less space than RAW+DNG) To export your Lightroom adjustments to an XMP sidecar file, either automatically or manually on demand, see here: 1.Choose Edit > Catalog Settings (Windows) or Lightroom > Catalog Settings (Mac OS). 2.Click the Metadata tab, and then ...
Both I suggest. Each contains unique data that is not preserved in the other. RAW has fine graduation detail, the edited version has your work invested in it. Also make more than one archive copy, keep on separate media in different physical locations.
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