Iray blue shadows with HDRI environment

Is there any way to reduce the blue cast in the shadows while using an HDR environment? I'm using the "Sunny Beaches Pack 2" UltraHD HDRI environment with default Iray render settings. In the attached image, if you look at the right side of the figure especially the right foot, the shadows seem too blue to me. Any help would be appreciated.

-Doug J.

blue_shadows.png
899 x 771 - 1M

Comments

  • FishtalesFishtales Posts: 6,161

    They look grey on my screen.

  • AlmightyQUESTAlmightyQUEST Posts: 2,005
    I'm thinking you are looking more at the reflected light on the figure more than the cast shadow? If so I think that is mainly a result of the HDRI. You might be able to put a primitive plane in a black or dark gray off to the right, but it might change the overall look a lot, and depending on how strong the light is from that side you could get some shadow cast.
  • JonnyRayJonnyRay Posts: 1,744

    I think what you're seeing is the light from the blue sky part of the HDRI shining on the figure and the sand. Iray doesn't let you adjust the colors of shadows since it assumes your light is working the way light works in the real world.

    What you might try doing, however, is adjusting the white point in the tone mapping. Film and video cameras have often had similar issues when they are balanced for a particular type of light (say an outdoor scene) and then they move to a different light (e.g. an office scene under flourescent lights). Our eyes and brain automatically make small adjustments for what we think should be white and so we don't notice as much.

    So try bumping the white point in Tone Mapping a little each way (warmer (more red) and cooler (more blue)) to see if that helps you get what you were hoping for.

  • Cake OneCake One Posts: 381

    Hi

    The blue on her foot seems to come from the reflection of the sky from the sand.
    Sky is blue, it projects a slight blue light and it's reflected by the shiny grains of sand, not a lot, but enought to taint the feet.

    When we take the pictures to craft the HDRI sets with several level of exposures, almost every aspect of the light is captured, meaning the sand being reflective is captured too.

    Those Beach tends to have a light blue hue, due to the moment the pictures were taken (i don't remember the exact date or time of the day) so to correct this, if you don't like it, you can change the White balance in the render area.

    If you're not sure how to do that, just say it here and i will gladely guide you though it :)

    Hope this helps

    C.

  • dougjdougj Posts: 92

    Thanks to everyone for your suggestions. I'm still new to Iray, so every bit of advice is welcome. If the white balance in Iray doesn't fix it, I'll just have to use photoshop.

    Doug J.

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