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DA Real World Lighting questions

jakibluejakiblue Posts: 7,281
in The Commons

http://www.daz3d.com/da-real-world-lighting

I'm having a bit of trouble lighting a scene using this. Is it possible to see WHERE the sun is? All the "times" I am using render quite dark, so I'm assuming that perhaps the building is blocking it or something. (I know nothing about the sun-sky setting in iray so I could be way off base)

Comments

  • TangoAlphaTangoAlpha Posts: 4,586

    The "sun" follows its real position in the sky, according to time of day, time of year and latitude. If your camera is "front" or pointing in that approximate direction, you are looking "north", so the sun will rise on your right, be behind you at noon (assuming northern hemisphere), and set on your left. How high it gets depends on your latitude and time of year.

  • ChoholeChohole Posts: 33,604
    TangoAlpha said:

    The "sun" follows its real position in the sky, according to time of day, time of year and latitude. If your camera is "front" or pointing in that approximate direction, you are looking "north", so the sun will rise on your right, be behind you at noon (assuming northern hemisphere), and set on your left. How high it gets depends on your latitude and time of year.

    And where would it be if you are in the upside down part of the world?

  • FishtalesFishtales Posts: 6,162

    The default loading of the Perspective camera is facing South so the sun rises on the left as you view the screen no matter what Latitude unless it is at the Poles and then it will go round you in a circle depending on the time of year and Hemisphere. Winter at the South Pole darkness and at the North Pole all day sunshine, and vise versa.

  • AnotherUserNameAnotherUserName Posts: 2,727

    Use this jakiblue. It gets rid of alot of the guess work. Its free as well. http://www.daz3d.com/light-probe-tool

  • ZippyGuitarZippyGuitar Posts: 849

    Did you apply the Base Light and Sky preset first? I don't know if a person has to do that, but it does say in bold Apply First. When I'm setting the time I usually adjust by picking a nearby random location (I'm American, so i pick someplace in U.S. or Canada). You don't have to do that, I just do basically to do it. I adjust my own time in the Iray render pane. I also use Real World's default North Facing Camera. 

    One other thing...are you using AM or PM when adjusting your time of day? I accidentally used 3 AM instead of 3PM and it was DARK! It looked very creepy and ghostly. I caught it right away before it could render anymore. 

  • Mr_ EMr_ E Posts: 68

    • I'd like a more detailed sky than the default background offers. However, when I try using several different skydomes, they blackout the scene. I tried applying a JPEG from Skies of Economy http://www.daz3d.com/skies-of-economy but it doesn't wrap correctly over the environment's background. Can anyone suggest to get a more detailed skydome to work with DA Real World Lighting?

  • grinch2901grinch2901 Posts: 1,246
    Fishtales said:

    The default loading of the Perspective camera is facing South so the sun rises on the left as you view the screen no matter what Latitude unless it is at the Poles and then it will go round you in a circle depending on the time of year and Hemisphere. Winter at the South Pole darkness and at the North Pole all day sunshine, and vise versa.

    You can rotate the dome too. So you set it for some time in winter in Argentina at 4pm but everthing in the scene is all in shadow? Under render settings/environment rotate the dome around and maybe you can find and angle that gives you better sunlight. Trial and error though, I don't know a way to visualize it.

  • ArtiniArtini Posts: 9,723

    Sorry, to bringing up this old thread, but I have a trouble with this set and could not find any other related thread.

    Most of the time renderings drops to CPU only and iray renders takes ages (Daz Studio Beta 4.14).

    It happens with UltraScenery scenes and only simple scene with the primitives renders on GPU.

    I have Nvidia card with 8 GB of VRAM on Windows 10 Pro, 32 GB RAM

    and have no problems with GPU rendering of UltraScenery scenes with different light setup.

    Anybody are still using this light solution or is it abandoned long time ago?

  • ArtiniArtini Posts: 9,723

    Just checked regular RAM usage is at 99% (31.8 GB) with simple UltraScenery island 3 preset,

    but maybe it is normal, because of CPU rendering only.

    https://www.daz3d.com/ultrascenery--realistic-landscape-system

     

  • ArtiniArtini Posts: 9,723
    edited January 2021

    Below is an example render (on CPU only) of the scene mentioned above.

    I really like images created with DA Real World Lighting,

    but dropping to CPU only render mode in iray is a big trouble for me.

    image

    Post edited by Artini on
  • ArtiniArtini Posts: 9,723

    Ok, problem solved. DA Real World Lighting is changing the Optimization of instances to Speed

    and that makes the problem, because UltraScenery uses a lot of instances.

    After changing Optimization to Memory, iray renders are fast and on GPU.

     

    island3sc01pic01.jpg
    1920 x 1200 - 1M
  • Design Anvil - Razor42Design Anvil - Razor42 Posts: 1,239

    Glad you worked it out!

    Thanks for letting us know the details also.

  • ArtiniArtini Posts: 9,723

    Thanks a lot for creating this product. It works very nicely with UltraScenery scenes.

     

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