This is probably a daft question, but can a dedicated duplicator backup blu-ray PS3 discs and/or films?
I understand AnyDVD can backup films with a normal PC Blu-Ray burner, but can a duplicator machine do films and PS3?
No, I believe a standalone duplicator cannot duplicate Blu-ray movies and PS3 games.
I believe standalone duplicator CAN back up Blu-Ray such as film or data.
Here is your reference, you can find Blu-ray duplicator.
The duplicator cannot copy the protection sectors so for commercial discs the answer is no.
For home made discs then yes as you will have burnt the data onto the disc the first time and could not have writen protection sectors etc using your burner so it will copy.