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Iray Sky

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  • chris-2599934chris-2599934 Posts: 1,913
    edited March 2017

    I haven't tried them yet, but there are some free not-too-cloudy HDRI domes on this page:

    http://noemotionhdrs.net/hdrday.html

    Post edited by chris-2599934 on
  • TaozTaoz Posts: 10,285

     

    chris-2599934 said:

    I haven't tried them yet, but there are some free not-too-cloudy HDRI domes on this page:

    http://noemotionhdrs.net/hdrday.html

    Thanks, question is if they can be used as sky?

  • chris-2599934chris-2599934 Posts: 1,913
    Taozen said:

     

    chris-2599934 said:

    I haven't tried them yet, but there are some free not-too-cloudy HDRI domes on this page:

    http://noemotionhdrs.net/hdrday.html

    Thanks, question is if they can be used as sky?

    You should be able to.

    Download the image you want to your computer, and unpack it (you'll need something that can unpack .rar files, I use a program called 7-zip).

    Put the .hdr file somewhere. I've made a folder for HDR files in my DAZ library folder.

    Fire up Daz, and in the Iray render settings look for "Environment Map." Set it to the .hdr file you just stored. Make sure "Draw Dome" is set to Yes.

    When you render it in Iray, you'll get the sky and its lighting.

     

  • TaozTaoz Posts: 10,285
    chris-2599934 said:
    Taozen said:

     

    chris-2599934 said:

    I haven't tried them yet, but there are some free not-too-cloudy HDRI domes on this page:

    http://noemotionhdrs.net/hdrday.html

    Thanks, question is if they can be used as sky?

    You should be able to.

    Download the image you want to your computer, and unpack it (you'll need something that can unpack .rar files, I use a program called 7-zip).

    Put the .hdr file somewhere. I've made a folder for HDR files in my DAZ library folder.

    Fire up Daz, and in the Iray render settings look for "Environment Map." Set it to the .hdr file you just stored. Make sure "Draw Dome" is set to Yes.

    When you render it in Iray, you'll get the sky and its lighting.

    Well I've already tried that but all I get is a black render that finishes in a few seconds?

  • TaozTaoz Posts: 10,285

    Hm, after clicking the Iray Defaults button and trying again, it now works. Maybe some of the previous stuff that was loaded had changed something.

  • TaozTaoz Posts: 10,285
    Taozen said:

    Hm, after clicking the Iray Defaults button and trying again, it now works. Maybe some of the previous stuff that was loaded had changed something.

    Looks like that's the case - it's Iray Worlds that changes something. I've tried to load and render an Iray World scene, then creating an new scene (File > New). Now the HDRI renders black again. Resetting Iray to either DS default settings (I have these as a preset), or clicking the Iray Default button fixes it.

  • FistyFisty Posts: 3,416

    Try loading a different light set that uses just HDRI (something like this one) and then change the hdri image to the one you want to use instead.

  • TaozTaoz Posts: 10,285
    Fisty said:

    Try loading a different light set that uses just HDRI (something like this one) and then change the hdri image to the one you want to use instead.

    Will try that, thanks!

  • kyoto kidkyoto kid Posts: 42,036
    edited March 2017
    Taozen said:

    Here's how the shadows look with the default setup:

     

     

     

    ...the shadows seem to diffuse too quickly:

    Below are two render tests with the same set of primitives I did using the Iray Sun/Sky (each object is 5' tall).  Notice that while the shadows do soften with the height of the objects the effect is not as much as with the default light.

    Used the standard outdoor bright sun settings for ISO 64.

    sun sky shaodow test 1.jpg
    1200 x 900 - 734K
    sun sky shaodow test 2.jpg
    1200 x 900 - 721K
    Post edited by kyoto kid on
  • AndySAndyS Posts: 1,447
    edited March 2017

    Hi,

    what is your setting for the parameter "SS Sun Disk Scale"? Default is 4, which is physically not correct. In real the sun has round 0.5°

    As I observed in most of the available HDRIs the shadows caused by the built-in sun light are way too soft. And there isn't any chance to do something about it afterwards.
    But on the other hand softer shadows are more comfortable for the audience looking at the pictures. wink
    So it's up to the user which to use.

    Post edited by AndyS on
  • TaozTaoz Posts: 10,285
    kyoto kid said:
    Taozen said:

    Here's how the shadows look with the default setup:

     

     

     

    ...the shadows seem to diffuse too quickly:

    Below are two render tests with the same set of primitives I did using the Iray Sun/Sky (each object is 5' tall).  Notice that while the shadows do soften with the height of the objects the effect is not as much as with the default light.

    Used the standard outdoor bright sun settings for ISO 64.

    Yes, you're right. How much it matters in practice though I don't know.

  • kurtmurphy1kurtmurphy1 Posts: 58

    Newbie question here... I bought the Iray Daz Sky, but I don't see any documentation on blending it into the background or using it with Daz's sun sky.... This is what I'm getting...

     

    thank you

    sky.jpg
    999 x 562 - 296K
  • TaozTaoz Posts: 10,285

    kurtmurphy1 said:

    Newbie question here... I bought the Iray Daz Sky, but I don't see any documentation on blending it into the background or using it with Daz's sun sky.... This is what I'm getting...

     

    thank you

    Nor sure that Iray DAZ Sky is, do you have a link to the product?

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