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hair is "radiant"?

KRISHANKOKRISHANKO Posts: 94
in The Commons

so im trying to make a funny set of pic of two kids competing in a surf race.

however, when i put them face to face (typical face off pose) the kids hair seemed to be a light source itself and his hair color reflects on the other kids face.

i tried toying with almost all the parameters but the hair still reflects. why is this happening and how can i fix it? in this pic i put his head closer so you can see better what i mean.

even removing anything remofely related to reflectivity on the black kids skin still didnt help.

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903 x 733 - 2M

Comments

  • barbultbarbult Posts: 24,757

    Is this in Iray render engine? Select the hair in the Scene pane. Open the Surfaces pane. Select the hair surfaces in the Surfaces pane. Is the Emission Color anything other than pure black 0,0,0? .If so, that is your source of light emitting from the hair. Change the Emission Color ro black to stop that.

    If this is 3Delight, check the Ambient Color, I think. It has been a long time since I used 3Delight.

  • KRISHANKOKRISHANKO Posts: 94
    edited May 2022

    yeah its iray, ill try that and see what happens. will edit this if it worked or not.

     

    the emission color is already pure black, but still reflects.

    also, the black kids skin also has pure black emission.

    i seriously dont know what i can do.

    Post edited by KRISHANKO on
  • Matt_CastleMatt_Castle Posts: 2,647

    Iray aims for physically accurate rendering, and what it's doing is accurate; the light reflected off the surface will match its colour, and while that's often going to be diffuse enough and reflecting onto rough enough surfaces to be overwhelmed by other lighting, this does happen in real life.

    Your options are to make the kid's hair a less dramatic shade, or to correct in post.

  • marblemarble Posts: 7,500

    Sometimes hair, especially OOT hair, has an odd "sparkle" to it. I usually set the Cutout Opacity to 0.99 and, as if by magic, the sparkle has gone.

    Not sure, from your picture, whether this is the same problem.

  • KRISHANKOKRISHANKO Posts: 94
    edited May 2022

    MMM ILl try doing that opacity thing. will edit if this works.

     

    though this is not an OOT hair.

     

    nope, didnt work. guess my only choice is to delete it in post. though ive never seen this happening in real life.

    unless someone else wants to offer some advice?

    Post edited by KRISHANKO on
  • richardandtracyrichardandtracy Posts: 5,881
    You could try something a little off the wall. Set the hair emissivity colour to white and a value of -2000 lumens per square metre (experiment). That will then suck light out of the scene, and may have the desired effect. I use it with the skin of one character to emphasise AO.
  • rosselianirosseliani Posts: 374
    edited May 2022

    A bright yellow hair like this returns the yellow component of light, so it is as if the hair were emitting yellow light.

    That's why reducing the glossiness and reflectivity of the dark skin is only a little help.

    You could increase the distance between the hair and the dark skin but that's not what you want.

    Or give the white boys hair a more "natural" shade.

     

    Post edited by rosseliani on
  • KRISHANKOKRISHANKO Posts: 94

    its because of that? damn.. i had to "yellow up" the hair because the "blonde" of this hair is so white my own dark brown hair is more blonde than it.

     

    damn it.. at least i only did 2 pics before this one.

     

    thanks for the help anyway guys! stay tuned for my next installment on "i funk up, halp meeh" topic.

    circa tomorrow.

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