Delete duplicate photos but not those already in albums
There are a number of duplicate photos in my Library- not enough to justify any 3rd party remover.
About half my photos are in albums (others I label or give them keywords for easy searching).
I’m happy to delete duplicates manually.
However if I’m looking at a pair of similar photos how do I know that the one I’m about to delete isn’t the one that I’ve already saved to an album? (None of my albums seem to have duplicates).
Thanks