Physcam Safe Frame different

[SnipeyX]

vray 1.5 RC3

What setting could be causing my Vray physical camera to render with a different safe frame than the one shown in max?

If I change the view from camera to perspective and render the same view, the extents of the image are exactly like what is shown in max, if I render from the physCam it is shifted to the right somehow.

type still cam
targeted on
36 mm film gate
45.456 focal length
1.0 zoom factor
f8
distortion 0.0
vertical shift 0.0

no motion blur or dof

The camera is animated across several positions for stills, a new position each frame, only the position of the target and camera is animated, no other settings.


?

[SnipeyX]

removing the keyframes from the camera seems to have fixed it. but i'm confused as to why.

Edit: I thought maybe switching the curves interpolation to step would solve it, but it actually made it MUCH worse, what should be on the right side of my image, is now in the center.

Incidentally, if this is fixed in 1.5 final i'll be quiet now.

[carcassrulez]

searchy searchy ... as Daforce would say!!

physical camera view is NOT (RC or final) something that safe frames in Max can Reproduce...

http://www.chaosgroup.com/forum/phpB...ht=safe+frames

[SnipeyX]

Thanks for the link, and for the record, searching for "safe frame" (not plural) or "physical camera" (which I did) do not return that thread.


Edit: I think my point is still valid though, it works fine if I don't have keyframes on it, which really shouldn't change anything in regards to what is in the view.... I could understand if I had motion blur on and it was blurring the camera motion as it moved across my scene at each frame, but I don't have motion blur on, it's position or angle is just incorrect when it renders.

[vlado]

You may have some luck if you change (increase) the "geometry samples" option for motion blur; even for still images v-ray caches the camera motion (for light cache fly-through calculations, for example).

Best regards,
Vlado

[SnipeyX]

So even though motion blur is turned off, increasing the motion blur settings will affect my render? Seems counterintuitive, similar to how the saturation/contrast GI settings affect your render even when GI is disabled and the settings are greyed out.

Hmm, so I guess if there is no way to disable this I can't use a single physical camera to render multiple areas of my scene then?

I prefer working with one animated camera instead of multiple still cameras because it takes only one job submission to backburner to render all the views.

When I have some time I'll test changing the settings to see if that fixes anything, for the time being I just fixed the one image I needed by deleting the keyframes and then rendering.

[vlado]

Ideally this should work correctly; I know people have rendered several views set up in this way by animating the camera, but I am not sure what may be wrong in your particular case.

Best regards,
Vlado