See more of the pitch and teammate runs.
See your wingers and fullbacks making runs off-screen.
So the final write-up should explain that PES 2013 for PSP and PS4 are different ports, with the PS4 version benefiting from improved visuals and smoothness in camera movements. The camera features themselves (like switching angles) would be similar but enhanced by the better hardware. There's no direct connection between the PSP's camera (which is the in-game feature) and the PS4's PlayStation Camera hardware in terms of integration unless there's motion control, which wasn't present in PES 2013.
Launch your game via PPSSPP to see the new perspective in action. Manual Settings for a Better View