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Environment control in Maya (Read 3601 times)
Rick Toxik
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I love HDR

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Environment control in Maya
04/04/11 at 14:08:39
 
Hi hdr labs guys...
  Thank you for the amazing plugin, I use it for almost every Maya render...

After using sIBL for several months, I'm still trying to figure out one thing.  Is there a way to control the environment lighting in sIBL, like you would with the "multiplier" value with the mia_physicalsky?

My problem is that I'd like to light my scene only with sIBL, so that it is physically accurate, but the shadows seem too dark.  Is there a way to control this with sIBL or do I have to add extra lights to my scene?

Thank you very much!
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Kel Solaar
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Re: Environment control in Maya
Reply #1 - 04/05/11 at 08:30:55
 
Hi Rich,

Do you have an example render? There is an annotation in the scene named [Smart Ibl Controls], there are a few controls (gain/gamma) exposed on it, I would try with the lighting gamma a bit, that should lower the contrast and fill the shadows a bit.

KS
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thenextside
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Re: Environment control in Maya
Reply #2 - 07/28/11 at 05:20:56
 
How does that exposure node connect to the sIBL? I can't see it's connection anywhere. When you graph the sIBL it doesn't show up. When I fist load in an sIBL the first thing that shows up is that exposure node. But as soon as you click on something else its gone and I have to go digging in the hypershade to find it. Am I missing something? Rich, you indicate that it is connected to the [Smart Ibl Controls]. That isn't what I am seeing. Is it possible that the sIBL I am using isn't set up correctly? Thanks!
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thenextside
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Re: Environment control in Maya
Reply #3 - 07/28/11 at 05:40:12
 
I see that it is a lens shader now. Is there anyway that exposure could be tied directly to the environment map so the entire image is not getting darker?
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Kel Solaar
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Re: Environment control in Maya
Reply #4 - 07/28/11 at 08:35:11
 
Hi,

The mia_exposure_simple node is a lens shader, so it will affect the whole image (It's by the way connected to the scene cameras). If you want to affect only a component of the lighting rig, either use the [Smart Ibl Controls] or alter directly the shading network connected to the rayswitch.

KS
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