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Can An Object Be Transparent For Light ONLY?

mwokeemwokee Posts: 1,275
in Technical Help (nuts n bolts)

I'm trying to set up lights for a room. if I remove the ceiling, the lighting is perfect... but then I have no ceiling. Put the ceiling back, it blocks the light.

 

Is there a setting where the ceiling will be in the scene but allows light to pass through it as if it wasn't there?

 

Thanks

Comments

  • JD_MortalJD_Mortal Posts: 760
    edited January 2016

    PARAMETERS: "Cast Shadows: [OFF]"

    When selecting an object.

    That should let light pass through, but it will still iluminate, be translucent, and accept shadows. Unless those are turned-off in the MATERIALS settings.

    Post edited by JD_Mortal on
  • SzarkSzark Posts: 10,634
    JD_Mortal said:

    PARAMETERS: "Cast Shadows: [OFF]"

    When selecting an object.

    That should let light pass through, but it will still iluminate, be translucent, and accept shadows. Unless those are turned-off in the MATERIALS settings.

    but that will only work for 3delight or Iray Interactive (not Photoreal) rendering mode.

  • mwokeemwokee Posts: 1,275
    Szark said:
    JD_Mortal said:

    PARAMETERS: "Cast Shadows: [OFF]"

    When selecting an object.

    That should let light pass through, but it will still iluminate, be translucent, and accept shadows. Unless those are turned-off in the MATERIALS settings.

    but that will only work for 3delight or Iray Interactive (not Photoreal) rendering mode.

     

    It appears to work only for 3Delight, not Iray.

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