All photos (snaps) you take of Pokemon are separated into one of four categories —
1 / 2 / 3 / 4 Stars. Pictures are saved for each Star Category and ranked individually. You can get silver / gold / platinum snaps for reach Star. The higher the Star Category, the higher the point value. To get the best possible pictures, you’ll want to keep an eye out for those super-rare
4-Star Snaps.
To complete your Photo Album, each Pokemon has a slot for all four Star Categories — so you’ll want to get simple pictures, action shots, and everything else you can. If you choose
[Auto-Select] at the end of a research run, Dr. Mirror will always prioritize taking new shots for your Pokedex — he won’t necessarily pick the best, but he will always pick the best possible snap that also fills an empty spot in your Photo Album.