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Not sure if this is correct, but does maxwell currently support 3d motion blur? Based on these tests it doesnt.

vray

maxwell

It's not about being able to render motion blur in 3D but subframes.
Maxwell renders motionblur in 3D, however it's limited to 2 subframes, yet.
More subframes will be available.

Heh, nice. I`m looking forward for NL statment....

morbid angel wrote:Not sure if this is correct, but does maxwell currently support 3d motion blur?

Interesting test. It seems that M~R has less of a problem with the number of subframes, but with the kind of transformation between them...

Kabe

Kabe, I think you're talking about keyframes, not subframes.

Yes, this is a classic "too few subframes" motion blur problem.

_Mike

well if its limited to 2 subframes it is something that can be changed. I think the amount of sub frame sumpling should be an option you can specify, such as in vray geometry sampling where 1 sample = 1 subframe.

In time, they'll add more subframes, I'm sure.

_Mike

Hello Maxwellers & good test Morbid Angel!

I've done a few tests with motion blurr: A emitter sphere rotates arround a null. When rendering a frame, it doesn't render the sphere's movement but straight strokes..

Basically I try to produce an effect similar to the high exposure time night shots where we see car's light's path (red strokes)..

Is it the same subframe problem? If so it would be really nice to be able to change that because the actual motion blur is not usable in every situation..

Yes, it's the same problem.

_Mike

I'd love to have the same motion blur as with Fprime : the more it refines, the more subframes (of frames if shutter speed -aperture time- is more than 1/fps) it uses. You can have very complex motion blur effects just as with very low shutter speed photo (you know, like lines of car lights in the street, or writing letters in the air by moving the flamme of a lighter in front of a camera, all this kind of stuff).
HD

If they add more subframes, then the question is:what will be the relationship : RenderTime VS subframes...
i hope not RenderTime= Rendertime x Subframes

What do you think Tom?your are good in math

speaking from vray experience more subsamples = more memory usage... dramatically more, and ofcourse the r-times....I recal upping the subframes for this one shot only 6 subsamples and my mem flew up above 3 gb before it crapped out. (i got 3gb switch)

Thanks Mike, I was not sure about my tests

I hope Maxwell will be able to handle that with less RAM/power than Vray...

You have to give it time... Maxwell is a long, long way from being production-ready. Personally, I feel it's still in Alpha, having Beta-tested dozens of pieces of software over the years, but in all, it's got a solid foundation, and tons of promise.

_Mike