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Creating God Rays?

DekeDeke Posts: 1,635
in New Users

I'm using Daz and Iray...and I'm using the MAR Atmocam. This adds a volume of haze to a scene,  and occasionally that results in God rays when light streams through a window frame. I'm having a tougher time getting a atmospheric volume around an object. For instance a car sitting on a foggy street. If light comes form the left there should be some fog-shadow lines to the right. Any tips on how to get such a thing working?

Comments

  • SickleYieldSickleYield Posts: 7,644
    edited November 2015

    Do you have a link to a picture example of what you mean?  A photo is okay, just any example of the effect.

    Post edited by SickleYield on
  • DekeDeke Posts: 1,635

    Anything that leaves shadows through fog.
     

  • SickleYieldSickleYield Posts: 7,644

    Aha!  Well, I have AtmoCam, let me test it.

  • mjc1016mjc1016 Posts: 15,001

    This was done in 3DL...but the principle is the same.  Careful placement of the volume, the shadow casting objects and the lights...they all have to line up 'right' to get the effect you want.

  • SickleYieldSickleYield Posts: 7,644
    edited November 2015

    Here's a demo scene out of DS 4.8 (it will work in 4.9) that does get shadows out of the fog volume.  It requires AtmoCam and the free G3F Figure Essentials.  Look at the area around her hands for the ray shadows.

    You have to have a bright light behind a figure or item that is smaller than that figure or item, and a more dimly lit environment, basically.  I used a spotlight set to "point."

    zip
    zip
    AtmoCamDemoShadows.zip
    55K
    Post edited by SickleYield on
  • DekeDeke Posts: 1,635

    Thanks for the help.  It really is a matter of fine tuning light, atmo, and object. And thanks Sickle for the great tuts.

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