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Mental Ray sampling quality for broadcast
show user profile  EODmaster
Hello all.
I'm working on a logo for a corporate video, rendering using Mental Ray.
The video is mainly for web use, but will be displayed on large screen LCD TV's on exhibitions.
Just wanted to know what's the sampling quality people here are using with Mental Ray for broadcast apps.
The schedule is not tight, but endless render time is still something I'd like to avoid.


read 524 times
3/29/2009 8:14:20 AM (last edit: 3/29/2009 8:14:20 AM)
show user profile  Bobbyboy
Well, at the end of the day, every image is different, your resolution should be fixed at a set size for broadcast and so all you have to do is play around with the sampling setting to get a good result free of artifacts (you can also affect sampling on a per material basis with arch design shaders)

For final render i usually use 1/4 - 1/16, but it depends on the detail in your scene

read 516 times
3/29/2009 8:37:39 AM (last edit: 3/29/2009 8:37:39 AM)
show user profile  EODmaster
My resolution is set to 1024X576 (PAL 16:9 square pixels)
the figures you posted quite surprise me actually...
from experimenting I could only get clean looking edges using
min 1- max 4 sampling, which takes a long time to render.
Am I doing something wrong?
read 498 times
3/29/2009 10:56:18 AM (last edit: 3/29/2009 12:16:42 PM)
show user profile  Bobbyboy
It depends on your scene, iif you have lots of blurry surfaces, displacement, motion blur etc it will take longer.

There are always ways of optimizing scenes though but Also remember your computer is important as well, it might not be that powerful. (Also, I'm usually doing stills so it isn't as important, you might want to try lower settings to get it out faster if it is a long animation)

I don't know what else you can try, maybe someone else can suggest something

read 466 times
3/29/2009 6:18:05 PM (last edit: 3/29/2009 6:18:05 PM)
show user profile  EODmaster
I'm working on a Dual 3.0 Ghz Dual-Core Xeon HP workstation,
so that's not the problem I guess.
I've been reading some ideas about the contrast settings,
but I still don't fully understand these.
read 456 times
3/29/2009 10:14:37 PM (last edit: 3/29/2009 10:14:37 PM)
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