Does anyone know how to over come the inconsistent and overlapping of geometry samples in the search of smooth rotational 3d motion blur? As seen in the attached images the more geometry samples you apply the more overlapping artifacts you get. It is only at 20 geometry samples that it is 100% clear…

The motion is very fast and the initial 1 sample per pixel for the bucket does not hit any part of the object, so V-Ray does not place any more samples there. To fix this, increase the min. subdivs for the image sampler (2 seemed to work well for me) or increase the motion blur subdivs above the max…

[image] Understanding VfS Error Log The motion is very fast and the initial 1 sample per pixel for the bucket does not hit any part of the object, so V-Ray does not place any more samples there. To fix this, increase the min. subdivs for the image sampler (2 seemed to work well for me) or increas…

Quick one for you vlado - how does vray calculate motion blur per object? Does it kind of make a copy of the object for each of the time samples you’ve set and then trace vectors for each vertex to calculate their trajectory and blur along that? Or does it make copies of the object for each time sam…

[image] Call for more testers: The mighty bug hunt! If I am using motion blur in most of my work do I put more samples into the DMC Sampler or the Motion Blur subdivs? Or should I start with the same DMC samples for static and motion blur images, and increase the values for the subdivs as needed? …

This is annoying. Lack of MB is one thing that makes me use RT less.

I looked at it; initially I did not find anything wrong on the V-Ray side except that the object rotates somewhat too fast for the 3ds Max internal time resolution (3ds Max has only 160 ticks in a frame; they are not enough to sample accurately sub-frame positions for quickly moving objects). I came…

It is using real world rotation RPM values. The real world system has a max speed of 395 RPM or 2370 degrees/second (calculated by a conversion tools such as this ). And 2370 degrees / 24 frames results in 98.75 degrees/frame or 0.6171875 degrees/tick. So I guess the question is how many degrees/tick…

So this now fixed for the service pack in December. If you would like to get the fix before that, please email me to vlado@chaosgroup.com Best regards, Vlado

Vlado, Thank you for looking into this and getting taken care of. I will try it out once I get through the current round of projects. -Eric

Rotational Motion Blur and Overlapping Geometry Samples...

V-Ray V-Ray for 3ds Max Issues

ecraft November 28, 2011, 6:12pm 17

Any word on the initial issue of stepping in motion blur? This is preventing me from using Vray.

-Eric

How much GPU RAM would be enough?

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Rotational Motion Blur and Overlapping Geometry Samples...

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