I transfer downloaded photos from 'All Photos' into various Albums. How can I then mark photos still obviously in All Photos to indicate that they have been transferred, so I don't have to keep rechecking I have done so?
You cannot mark a photo visibly, other than adding keywords or favorite tags, or similar.
I would create my own All Photos album as a smart album, that excludes all photos already in albums:
This smart album will only be showing photos that have not been added to standard albums and will update dynamically, as you add photos to your albums.
How can I mark a photo in 'All Photos' once it has also been filed in an album
