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Forgott3n
04-03-2008, 10:47 PM
Hello,

My multimedia class and I are working on a little animation short. We're are attempting realism and therefore using Mental Ray and the Physical Sun and Sky feature within it.

Maya 2008 is the version we are running.

What is happening is the render globals is default Production quality with Physical Sun and Sky added (default values) and then changing the Multi-Pixel Filtering's Filter from Box to Lanczos. Test rendering stills everything looks normal:

http://img367.imageshack.us/img367/1738/testnormaljt8.png

But upon batch rendering our 690 frames we're faced with blown-up over saturated values. Note that every shader has a HSV node applied to the color value (changing all from 1.0 to 0.454):

http://img216.imageshack.us/img216/1285/testoddhs3.png

Any idea whats going on?

The project folder can be downloaded here: http://www.mediafire.com/?2tld0impogw



Thanks!
Dtox
04-03-2008, 11:59 PM
I can't see the images for some reason(forum problems perhaps), but I noticed this-
every shader has a HSV node applied to the color value (changing all from 1.0 to 0.454): I assume the reason for this is 'gamma correction'?
So why not use a gamma correction node instead of HSV?
Check your globals too in case you have something pumping up your brightness levels.
What are you on? Mac or PC?
What's your gamma set to? 2.2 or 1.8?

Look at this thread-http://forums.cgsociety.org/showthread.php?f=2&t=610790
AccAD01
04-04-2008, 06:19 PM
Looks as though you added a camera after setting up Physical Sun and Sky. Click on "Update Camera Connections" on your mia_physical sky node. This should fix it.
Forgott3n
04-07-2008, 05:54 PM
Looks as though you added a camera after setting up Physical Sun and Sky. Click on "Update Camera Connections" on your mia_physical sky node. This should fix it.

Thank you! It appears that has solved the problem.


I assume the reason for this is 'gamma correction'?

You are correct. I made a mistake and meant to say Gamma Correct Node... not HSV.
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04-07-2008, 05:54 PM
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