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I am unable to find the lighting option that would turn off the ambient lighting after turing off all lightings in the scene while using Blender Cycles. What I mean is, if I turn off all the lights in a scene, the scene is still not completely dark - there seem to be still some ambient light.

Is there any way to turn this ambient light off so that it does not affect my lighting setup?

PS: I have noticed that if I use a HDR background for lighting and then disconnent the node from the world output - the scene becomes completely dark.

ambeint light after turning all lights off

saicode
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1 Answers1

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In Cycles, the Background is emitting light. This will affect all objects, which receive light.
enter image description here

In order for the ojects to not receive additional light, do one of the following.

  • Set the background color to black (0, 0, 0).
  • [or] Set the strength property of the Background BSDF to 0.0.
  • [and] Disable Ambient Occlusion.

enter image description here

If you don't want your background to appear black, the following node setup restricts the backgrounds visibility to camera rays.
enter image description here
You can also restrict the visibility of the background with the cycles settings. Uncheck everything except Camera under Ray Visibility and the background emit no light except to the camera.

Leander
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  • This is exactly I have been looking for.I would have come back for the camera settings ! Thank you for posting it even before asking! :)

    One more thing, how do you record screen cast GIF like you posted?

     – saicode Nov 07 '16 at 02:31
  • http://meta.blender.stackexchange.com/a/964/30849 – Leander Nov 07 '16 at 06:25