Quote:
Originally Posted by daveb867
i am not familiar with the vray physical cam but zap's script was basially a mental ray version, in fact i actually think it was called mr physical camera.
when you say so that you don't have to change exposure when you change views??? why would you need to change exposure when you switch to another view anyway???
surely another view would just be a different camera angle of the same scene, in which case, if it is the same scene then the lighting solution remains the same and therfore if the exposure is correct in one view it would be the same at all angles providing the lighting solution doesn't change (and also providing you are not meaning change from interior view to exterior view)???
or
do you mean setting one cam on the interior and one on the exterior and then applying interior exposure settings to the interior cam and vice versa with the exterior cam??? if thats what you mean then yes that would be very useful because then we could use one switch from an exterior to an interior in the viewport without having to dial in new exposure parameters to compensate for the change in lighting scenario (interior and exterior being the lighting scenarios)
sorry if that was a bit long winded
|
Both. If I am facing the building with the sun behind me for one camera, and the next camera I am on the other side of the building facing the sun, more than likely I will need to key in different exposure settings. Or, it I move to a view that is entirely in shadow, I will probably need to key in different exposure settings for the camera.
If I am doing an interior scene with multiple views, maybe a few different rooms in the same model, etc... There is a good chance that I will need different exposure settings. Maybe one room is getting light from the outside, maybe one isn't. They will need to be exposed differently.
I can do all this with scene states and such, but in reality that is extra steps where things can get screwed up. If they are attached to the camera, and change automatically when I switch to a different camera, there is less coordination needed on my part, and therefore less of a chance I will come in a morning before a deadline only to find out that I forgot to switch something when sending a different camera to render.
There is the BO physical camera script from the German Mental Ray forum. It is more robust than the standard Mental Ray exposure, or at least it ties several features of the Mental Ray exposure into one roll out in an effort to make it easy to work with, but this also creates a condition where I need to switch more than just my camera when switching views.