Is there a way to unlink an area light material from affecting geometry

[jlgroff]

Is there a way to unlink an area light material from specific geometry in a scene? I have a situation where I have one mesh where the light is too close for this item but exactly where I want it for everything else in the scene. I could likely fix the issue with render layers and photoshop but I was hoping there might be a way to unlink the light to a part.
thanks!

[INNEO_MWo]

You can split some geometry via geometry editor. Or you can overlay this area with another part and use a flat material?!

Hope that helps.

[mattjgerard]

I know in most other renderers there is an option to exclude certain objects or selection sets from being affected by various things (illumination, AO, shadows, etc) but not in keyshot. I would like this too, as I do a lot with LED fixtures inside industrial machinery, and while  its probably physically accurate to have a huge reflection to be bouncing off the part right next to the lamp, its visually not pleasant. And turning down the emission from the LED fixture changes the appearance of the lens materials, that's not ok either.

I usually get around this by using planes and shapes to block the light, assign an emissive material to it and turn it black, then click the hide from camera option, and use them as flags to shape and guide the light. its a pain, but necessary.

[jlgroff]

Thank you for this helpful advice. I will try your suggestion about adding geometry to negate the unwanted light(s). Not sure it will be easier than separate render passes but worth a shot. Having light-linking (similar to what you have in 3D packages like Maya) would be a great feature to add for KS 8.0...

[INNEO_MWo]

Can you post a simple scene with this effect?