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high speed motion blur (spinning tyres)

Posted: Tue Sep 27, 2011 3:23 pm
by Luca_Studioaltieri
Ciao everyone, i would show you a video.
It's a little-little-horrible draft test about my next video-project.

Here the link: http://www.youtube.com/watch?v=tNl2kpLr2QY

I noticed some issues about motion blur: please take a look at bmw tyres. They seems to have too blurred edges. Thery're so blurred that light can pass through (the car seems floating above road :) )

Motion blur is active on whole scene. Camera parameters are very.. "normal":

F: 5,6
Shutter: 1/750
ISO: 100
Rotary shutter: ON
Rotary shutter angle: 180
The car is perfectly laying on asphalt and the rotation speed of wheels is right compared to the car speed.

Any hints to avoid this effect?
T.y.
ciao
Luca

Re: high speed motion blur (spinning tyres)

Posted: Tue Sep 27, 2011 11:08 pm
by Bubbaloo
The problem is Maxwell doesn't currently support rotational motion blur. So unrealistic results will occur on fast spinning objects.

Re: high speed motion blur (spinning tyres)

Posted: Wed Sep 28, 2011 12:10 pm
by itsallgoode9
Curious as to why it has much more of an effect on the tires than the wheels? At first I was watching this thinking about the wheels and thinking it didn't look too bad, then when I re-read the post, I noticed those tires that looked like they are about 1/2 inch thick. Is it just the edges that Maxwell has problems with when it comes to rotational blur?

Re: high speed motion blur (spinning tyres)

Posted: Mon Oct 03, 2011 1:28 pm
by Luca_Studioaltieri
this i more more more noticeable when there's too mblur or too speed. (@itsallgoode9 like the outer edges of spininng wheel)
In this case the problem is that when "Rotary sh." is enabled, the shutter value "falls" to 1/50 to keep ev.