Jenni Kapanen asks:
Can I search for photos taken with iPhone in my Photos library? I’ve got over 13,000 photos that I’ve tried to keep organized and export them to an external drive so that I can vacate space on my hard drive, but want to keep the low-quality iPhone photos separate.
Yes, you’re in luck! I feel like the Smart Album feature in Photos (as in iPhoto) has a lot of overlooked power. Here’s a great case.
Start by choosing File > New Smart Album. Now you can select criteria. While there are some elements missing from iPhoto in Photos for OS X (notably related to whether any face has been set in a picture), you can still create complicated chained or independent queries.
Read more here:: How to separate iPhone pictures in Photos for OS X