Motion Blur question

[wesware]

Is that "object" motion blur?

I would suggest using "scene" motion blur... you can possibly lower your AA a smidge to help on the render times. Scene works great but you get hit with the render times and since it's not done in post, there's no tweaking it later... but it usually looks good.

[leed]

Is that "object" motion blur?

I would suggest using "scene" motion blur... you can possibly lower your AA a smidge to help on the render times. Scene works great but you get hit with the render times and since it's not done in post, there's no tweaking it later... but it usually looks good.


Thanks, Wesware
that seems to work. The blur is not same though, but I can live with it....
I used vector motion blur on the test....

can this be done though using Vector motion blur?

Thanks

Lee

[Simon Wicker]

motion blur in cinema is the last big no no.

none of the methods are great.

smb is the least problematic, but increases render times and doesn't respect HDRI values.

vector blur and object blur don't work full stop.

i think a lot of people use reelsmart motion blur to create blur as a post process in after effects.

cheers, simon w.

[leed]

Thanks Simon

Guess I will have to use SMB....

Regards

Lee

[dann_stubbs]

Thanks Simon

Guess I will have to use SMB....

Regards

Lee

you may want to do a couple tests before to check - i've found that with SMB you can turn AA to just geometry (which was a tip a while ago from simon - that i still appreciate him sharing) to save render time and it can help keep edges that aren't in motion sharper. also if the render is a long one, usually you can find the minimum SMB level and run the whole job that way and then only render the higher SMB in places that need it and comp it together - can be a big waste of time to run 25xSMB on a whole long render job when only a small percentage of the actual render needs the high sampling levels.

dann

[LucentDreams]

yes we just did characters for live action compositing and much of it was rendered with 16x SMB, a few shots had to go to 25, and a few slower ones we even did at 9x but thats only possible if theres very little motion!
Its the only way to go with cinema outside of post and honestly Reelsmart is the only decent solution for post right now, but honestly I've not had suitable results with character work to date using Reelsmart, so for character stuff imo SMB is the only choice.

[wesware]

SMB has worked well for me in the past... I admittedly have a very "forgiving" eye when it comes to my own motion blur...especially when the client is paying me under budget :)

I personaly am not to thrilled with RSMB straight out of the box. I have had to render in seperate passes and comp it together so my objects don't blur with the background or other objects which in the right scenario works well.

I have had "acceptable" results using SMB in Cinema with low AA and 9 or 16 passes then using a low setting with RSMB in AE to smooth out the stepped image.

Also... if your camera doesn't move perhaps you can render a repeatable section of the object in question... then loop it in post. That would save you some render time and allow you to use a higher SMB value. I'm guessing your camera moves though.

[leed]

Thanks for your tips...

I will run a few tests with geometry AA when I get back in work on Monday...


Cheers

Lee

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