The common way I render a bunch of frames over night is to set up my “animation” and then render specific frames over the course of time. It would be cool, if at those specific frames you you add the vertical shift mod to each of those frames and have it stick. Or maybe there is already something like that…But anyways it would be cool.
Thanx
Couldn’t you just animate the vertical shift?
that’s what I tried, but it doesn’t hold. I turn on Auto Key and then change it at each frame I want and it stays the same.
That’s odd because it works here in Max. Are you using Max or Viz?
Hmmm…perhaps I am doing it wrong. I am pressing the AutoKey and it turns red. Then I go to the frame that I want and hit Guess Vertical Shift…then O move on to the next frame and etc. Weird. Thanx for your help.
nop.. i have same problem.. with Max native camera (camera correction modifier) work’s well… with Vray camera, some times, reset to the 1st frame vertical shift value ..
We have manage to resolve this by inputing the value of vertical shift at each keyframe, not using “guess vertical shift” and it does animate.
João Grilo
Dreamlab
You can always use guess vertical shift then SHIFT and RIGHT CLICK the spiiner that should set a keyframe (even without autokey)
Hmm that’s cool, I did not know that one.
See im not just a pretty…high post count 
It is an extremely handy tip, make its easy to keyframe almost anything with ease.
lol, I don’t remember ever calling you pretty :o
Would it work if we made the “Guess vertical shift” button actually a check-button, that, when activated, would force 2-point perspective no matter the position of the camera (rather than just calculating the value once and entering it into the numeric field)?
Best regards,
Vlado
Absolutely…that would be perfect!
yes, i guess that would be the best option afaik.
I’m not sure it would be, to be honest.
When would it update?
If the camera moves, be it on mouse movement or frame movement?
Maybe i would want to keep a certain vertical shift for a period, then change it across a few frames, then keep it steady again…
Why not making the “guess” button compatible with the autokey feature?
If VRay updated it on his own, I’d have less control.
Well, even if the Auto key was working, there is no guarantee that an animated shift value would keep the 2-point perspective for positions between keys, as the camera interpolation may not match that of the shift parameter. You’d have to create a key for each frame, which is probably not the point.
Best regards,
Vlado
In my experience it has worked well when using the max camera correct to set a keyframe at the beginning middle and end of a camera path using the guess and letting the keys interpolate. For this method it would be good to have the autokey working for the physcam.
It would be interesting to see what happens when the shift is adjusted automatically for all frames, so I guess I would vote for both.
both for versatility sake!
lele’s got a point:)
lol both then! 
No, jokes apart, what i meant was to use the “wrong” 2p perspective for a handful of frames, before having it change to something else.
Not necessarily to use it as it’s meant to be used, but more from a freeform artistic (messy!) point of view.
Anything goes, though
