• Maxon Cinema 4D

  GI increases light sensitivity

  Posted by Jack Sewell on October 25, 2010 at 1:08 pm

  Hi there,

  I’m just trying to get my head around why when I apply GI, does it make the lights in my scene so much brighter. By about 400%!

  I could just turn the lights right down of course, but it feels like the ratio of light absorption / effect between the objects in the scene and the planes in the scene are offset from each-other.

  Also, I have a compositing background tag on a plane which also has it’s material set to frontal projection. This material is also applied to a background. This is so that I get a seamless infinity effect on the scene.

  However, when I hit the GI button, it also messes this up and the plane no longer integrates seamlessly into the background.

  I’m using r11.5 on an iMac on the snow leopard 10.6.4,

  Can anybody shed some light on this for me?

  many thanks,
  Jack

  Adam Trachtenberg replied 15 years, 6 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Adam Trachtenberg

  October 25, 2010 at 4:49 pm

  GI is basically the addition of indirect lighting to your scene, and also lighting from luminous materials. When light bounces instead of just terminating on first impact, it necessarily adds brightness.

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