I've seen multiple angles and a lot of really far away shots and a lot of really close shots, and you can both pan and rotate the camera, so I guess I'm a bit confused.
You can also put the camera overhead with default "O" on a keyboard, but that one can get kinda finicky sometimes.
What do you mean specifically by free camera? I logged almost 400 hours in D:OS2 and it seemed pretty free to me and was only a pain sometimes because the overhead was too close for some large AoE ability targeting.