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iRay Emission from Walls, Ceilings, etc, Causes Surface to Turn White

ebonartgalleryebonartgallery Posts: 262
edited May 2017 in Technical Help (nuts n bolts)

So I want to light a scene even further, and so turn the entire ceiling of a room into an emission source. This produces exactly the lighting I want save for one thing: the ceiling itself now looks like an incandescent bulb (red circle in the attached photo). I've tried adding the original ceiling jpg to the Emission Color, but that does not help.

 

testrender_lighting.jpg
1065 x 647 - 92K
Post edited by Chohole on

Comments

  • Former DAZ CustomerFormer DAZ Customer Posts: 167

    Setting the emissions value too high causes wash-out.  A good work-around would be to put an emissive plane just below the ceiling to provide the actual light, and give the ceiling itself a very low emissions output so that it just glows.  And, of course, set 'render emitter' to 'no' for that emissive plane.

  • FishtalesFishtales Posts: 6,162

    In that set I used the bulbs in the fluorescent lights to light the scene. Turn on the Emisive surface for the bulbs. See here https://www.daz3d.com/forums/discussion/comment/2179656/#Comment_2179656

  • ebonartgalleryebonartgallery Posts: 262
    Fishtales said:

    In that set I used the bulbs in the fluorescent lights to light the scene. Turn on the Emisive surface for the bulbs. See here https://www.daz3d.com/forums/discussion/comment/2179656/#Comment_2179656

    I did. The base light value barely lights up anything at all. What settings did you use for the bulbs?

  • ebonartgalleryebonartgallery Posts: 262

    Almost a year later. No answer.

  • FishtalesFishtales Posts: 6,162

    Must have missed this.

    I used real world settings Watts can be 65/85/125 depending on how long the fluorescents are and Efficacy set for fluorescent.

    https://en.wikipedia.org/wiki/Luminous_efficacy

    I also used an ies profile for a fluorescent tube.

    Colour can be set for warm white/white/daylight to suit taste.

  • InkuboInkubo Posts: 745

    It may or may not help, but instead of just choosing an emissive color, I plug the diffuse bitmap into the emission channel. That way each pixel glows in the color it was designed to have, rather than just glowing white.

  • fastbike1fastbike1 Posts: 4,078

    You did get an answer. Your emissive settings are too high. You can either reduce them or try the Ghost Lights products. 

    ebonartgallery said:

    Almost a year later. No answer.

     

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