I’ve just started playing with vrayphysical camera.
My early attempts were black exposures, before I realized I would have to repeatedly adjust the f-stop, film speed, and shutter speed to get a good exposure.
It sure would be nice to have an aperture priority mode and a speed priority mode, not to mention an autoexposure mode… perhaps even some preset modes (e.g. action, nightshot, flower… etc).
Even if these aren’t available (yet)… how does everyone determine good exposure settings if you need a particular f-number to get the dof you desire? I hate the repetitive, trial and error method.
We use our knowledge of real-world camera behavior.
Pretty quickly you get good at adjusting the exposure. Turn off anitaliasing, displacement, and turn down your GI solution for test renders and you can dial in the proper exposure to get the feel you want pretty quickly.
As far as testing the DOF goes…i usually use PPT because i get to see enough of the render while its building the image and i can just kill it and adjust the settings and re-render.