Integrating 3D models with photography
Interested in integrating your 3D work with the real world? This might help
# 1 31-12-2009 , 10:42 AM
Olorin's Avatar
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Join Date: Oct 2008
Location: Sweden
Posts: 66

Mental ray and directional light?

Hi. I am on my way now to getting my first render in mental ray look ok. I had it set up with spotlights and thought I should try it with a directional light instead. Selected one of my lights and swapped it to directional.

Guess what? My whole scene turned into night. Everything is lit as before, but very dark. I jacked up the intensity from 1.2 to 10, and it is still just as dark.

Why? Doesn't directional lights work with mental ray?

# 2 31-12-2009 , 09:40 PM
EduSciVis-er
Join Date: Dec 2005
Location: Toronto
Posts: 3,374
Is your scene in a boxed in environment? If it's a room for example, the walls will completely block all the light, as directional lights come from infinitely far away. You can uncheck cast shadows in render settings for the objects that are "outside" where the directional light should be coming from. Hope that makes sense.

# 3 31-12-2009 , 11:43 PM
Olorin's Avatar
Registered User
Join Date: Oct 2008
Location: Sweden
Posts: 66
Thank you. I solved my problem just an hour ago. I had managed to turn up my incandecense so it killed the shadows. Clumsy me.

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