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Lights and shadows - Solved

ArokariaArokaria Posts: 15
edited October 2016 in Technical Help (nuts n bolts)

Hello ! I should like to know how to lower darkness of shadows with spotlights. I try to decrease "shadow intensity" parameter but it doesn't work at all. It is so easy in Poser ! Someone could help me ? Regards.

Post edited by Arokaria on

Comments

  • barbultbarbult Posts: 26,243
    edited October 2016
    jeanlucbourjac said:

    Hello ! I should like to know how to lower darkness of shadows with spotlights. I try to decrease "shadow intensity" parameter but it doesn't work at all. It is so easy in Poser ! Someone could help me ? Regards.

    Which render engine are you using? Iray, 3Delight, or something else?

    I assume you are rendering in Daz Studio. What version of Daz Studio are you using?

    Post edited by barbult on
  • ArokariaArokaria Posts: 15

    I use Daz 4.9 Pro and Iray.

  • ToborTobor Posts: 2,300

    There is no "shadow intensity" control in Iray. Maybe you're trying to use a light intended for the 3Delight renderer, or importing a light from Poser.

    To add a light in Iray, be sure to first select Iray as the renderer. Then create the new light. Increase the luminosity (NOT the intensity) to elevate the light level to where you want it. Optionally, you may use a predefined Iray light provided in any of the Iray-specific light packages for sale here, or available elsewhere.

    In Iray, to diminish the intensity of a shadow, you increase the size of the light emitter. There is an option to do this in the parameters for the light panel. First change from Point to either Rectangle or Disc, then increase the size/diameter. The units are in centimeters. To achieve a "soft box" effect with a very softly defined shadow, set the size to 80-100 centimeters, or even larger. Note that you will need to increase the luminosity to spill the same light into the scene, as increasing the emitter size increases the area that is lit.

     

  • barbultbarbult Posts: 26,243
    edited October 2016

    Here are some illustrations of the concepts that Tobor has explained above. This is using the Iray preview mode in the viewport. Click on the attached images to see a larger view.

     

    spotlight point.jpg
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    spotlight disc 25.jpg
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    Post edited by barbult on
  • fastbike1fastbike1 Posts: 4,078
    edited October 2016

    There is (sort of) a shadow intensity in Iray. Environment Tab> Ground shadow Intensity. Used it in the attached render. Still Tobor is right about the best way to deal with shadows.

    Capture.PNG
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    Moonlight Dance 11x14 test.png
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    Post edited by fastbike1 on
  • ToborTobor Posts: 2,300
    fastbike1 said:

    There is (sort of) a shadow intensity in Iray. Environment Tab> Ground shadow Intensity. Used it in the attached render. Still Tobor is right about the best way to deal with shadows.

    Forgot about that one!

    Since it applies only to the virtual ground, it won't change shadows cast on geometry. Maybe this is what the OP is referring to.

  • ArokariaArokaria Posts: 15

    Many Thanks for the solution and regards.

  • KaliadderKaliadder Posts: 71

    Over a year later and still very useful advice.  Thanks so much!!!!

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