Yes you are right, but even if I think it's not physically accurate, I use small Focal lens fot my camera (let's say 16mm / FOV 96...), then to have if possible DOF I lower F-stop (let's say 4) but sometines the DOF effect is not enough ( I presume it's the case in real life) or you have to play distance focus, that's why I fake my 16mm with something like 80mm for exemple .
I would like to use CoronaCamera because of tilt and shift
Maybe I'm missing something with the corona camera
Thank you for your quick answer...