LESA SNIDER, MACWORLD:
"While it may be satisfying for the OCD within you to manually organize your digital mementos into albums in Photos, you can automate the process using smart albums. These albums self-populate based on criteria you set, so when Photos detects an image that matches your criteria, it’s automatically added to the smart album (just like iTunes’ smart playlists).
"Smart albums are insanely handy. For example, you can create one that collects all the pictures you take that include a certain keyword, say, comicon, that fall within a certain date range and that are tagged as favorites. Or how about an album that gathers all the pictures of your kids that also includes the keyword vacation? In this column, you’ll learn how to make smart albums and discover a few ideas on how to use them."
Read more, here.