Face detection on the Mac

One tool I used that was more useful than expected is the Face detection on a Mac ==>

In a picture I mark all the Faces with the names. Below you can see Karl Fride to the left in the picture

When I select faces and in the upper right select Faces I see just the part that is marked as a face ==> I can easier compare between pictures.

The Mac also have an automatic Face detection ==> he suggest if a person is part of a picture or if we have unidentified faces