The way the person's head is framed in the shot is pretty much identical most of the time and kind of a tell on its own.
Other tells:
- steve.jpg: The skin above the top rim of his glasses has some repetition/distortion.
- customer1.jpg: Distortion in the hair, most noticeable at top left. Mouth looks fake too.
- customer3.jpg: I didn't notice anything significant, but it just looks like an image taken straight off TPDNE. Do "vibes" count?
- customer4.jpg: The teeth merge into each other.
I guess you can get used to the distortions and the general vibe of the model.
Look at the background, does it make sense? Tell me what the background to the left of hear head is. Look at her earbobs, how often do people wear different ones in each ear? Does the left earbob look like anything?
Probably the biggest giveaway is that the faces are all positioned identically in each photo, but there's something else that juuuust quite doesn't look real. Maybe some of the faces just seem a little bit more androgynous than anyone I ever see in real life. There's something about them that sits just on the edge of the uncanny valley.
Our friend Steve has something going on with the left hinge of his glasses.
Customer1 has an interesting right ear.
Customer3 has very asymmetrical earrings.
Customer4 has a bulge where the left earring would normally be, and the right hinge of their glasses is crooked.
"customer1.jpg" and "steve.jpg" lol