View Full Version : light intensity at 0 but still illuminates

11-09-2006, 05:37 AM
I've got a scene i'm lighting. It's actually the lighting challenge number 2.

If you see the light edge on the wall to the right of the image. Thats actually supposed to be a softedge. But no matter what i do it doesn't change how the spot lights cone's edge is displayed. I actually turn the light intensity to 0 and it's still there. I delete the light and it's goes away. If i change the cone angle is gets smaller but no matter what i put in for falloff and penumbra angle wont change a dang thing. It has something to do with the Mental ray shader i've assigned. I'm rendering in Mental ray with a oren-nayar shader. the lights works how it should on the surface with a regular lambert but but the oren-nayar shader and it does what you see in the above image.

If i change the penumbra angle the edge moves to where the end of penumbra angle would end if it were working along with it. It seems as though it's seeing the penumbra angle but doens't apply the softening just a solid light intensity across.

Does anyone know how to fix this?

11-09-2006, 06:16 AM
I could help If I have your scene with problem...

11-09-2006, 07:19 AM
erm, I'm not entirely certain about what your lighting setup is, but what I understand is that for soft shadows in Maya, you'd have to use the area lights. If you aren't using maya 8, you'll have to create the spotlight, go to the mental ray tab and look for the area light option. Place a tick on that and your spotlight will start to cast soft shadows. You can adjust the graininess of the light by adding values to the high samples and low samples.


11-09-2006, 07:24 AM
Increase the "Raytrace Shadow Attributes" > "Light Radius" default = 0 = hard edged shadows. try something like 5 ?

11-09-2006, 04:31 PM
I tried all that but didn't work. This light isn't setup to cast shadows though either. It's just there to add light. Heres the scene. It uses some custom shaders so if you don't have them installed it might not render right.


the scene file can be downloaded there.

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11-09-2006, 04:31 PM
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