Cached Files and MB ?

[bernhard]

Hi there,

I just realized an issue when using cached files and using VrayPhys Cam (Movie) and MB.
The motion blur is not calculated correct and I am getting really wrong results.
I just don't want to mention, that motion blur on the phys cam is broken (vray 1.5 latest built)

Tested on cached files from Houdini, Maya and c4d - all referenced.

Is there anything that could fix the motion blur issue ?

Thx and till later,
Bernhard

[vlado]

There is indeed a problem with the motion blur in the physical camera (the mb interval end points are not calculated properly by the V-Ray for Maya translator); it will be fixed but for the moment you could try using a regular camera instead. Almost all of the effects of the physical camera (except the vignetting) can be done with a standard camera too.

Best regards,
Vlado

[bernhard]

do you mean, that if I am not activating the physical camera, and I just stick to the global settings of the global camera settings, under the camera tab-->MB and DOF.. the calculation is correct ?

I am just asking because we just had a post on the MB effect ,, and you mentioned it will be fixed for the next nightly built.
I just don't know if the MB is not working on the Physical camera only, or also when using the general settings.

Please also keep in mind, I am still using vray 1.5 latest nightly built, but rolling on 2.0 over the new year.

Thx for keeping me posted !

[vlado]

Only the physical camera MB is not correct.

Best regards,
Vlado

[bernhard]

ok.. but what about cached referenced files ?

I really want to mention that.. all the tests I did so far.. on cached animation files... the motion blur failed.. regardless if phys cam or just the standard vray motion blur.
a very important thing, since I cache all the geo for my current project !

plus.. even when using the velocity pass and testing 2d motion blur.. it doesn't work, because the source is just calculated wrong..
because this translates into the velocity pass ...

so this really ends in a dead end !

[vlado]

It would be best if you can get me a small scene where we can reproduce this to vlado@chaosgroup.com

Best regards,
Vlado