Photos in albums

You can create a smart album to show all photos, that are not in any album:

• Create the album with "File > New Smart album"
• Set the rule to "Album is not any"
• You may refine the album with a date added rule: Date added is in the last ... days

To see, which specific album a photo is in, you would have to write the name of the album into the info of the photo. You could simply open each of your albums in turn, select all photos in the album with ⌘A, open the info with ⌘I, then type the name of the album into the keywords field of the Info.

I am rarely using standard albums, mostly smart albums with the rule "keyword is ..". For example, to create an album with all pictures of flowers, I use a smart album with the rule "keyword is Flower".

Alternately you can run an Apple Script to search through all your albums for the selected photo and return a list of albums. But this is very slow on macOS Catalina. See: How to find out the albums a photo is in: Jacques Rioux's Script, Catalina Version for Photos 5 - Apple Community

Hikerg wrote:

Does it make a difference which if the three dates are used?

• If you set the rule to "Date added", the smart album will use the date when you imported the photo.
• If you set the rule to "Date captured", the smart album will use the date when the photo has been taken.

This will only make a difference, if you are importing old photos, taken several years ago. If you want to check older photos, taken many years ago for the albums they are in, use "Date captured", but if you want check your recently imported photos, use "Date added".

You're welcome 😊