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IRAY Lighting & Washed Out Garment

DarkRepastDarkRepast Posts: 224
edited December 1969 in The Commons

Hello,


I've been playing with IRAY a lot and I've been really messing with the lighting. I've finally got some decent lighting options but as I worked on a particular render, this white shirt the model is wearing gets washed out big time.

I've messed with the exposure settings and been able to tone it down a little but then it deadens the rest of the render.

I've included a sample of the washed out garment.

Is there a way to tone down just the shirt? Is there another setting which would work better?

Any thoughts would be awesome.


Thank you!

Example_of_Washed_Out_Shirt.jpg
756 x 908 - 507K

Comments

  • mjc1016mjc1016 Posts: 15,001
    edited December 1969

    It's not the lighting...it's the materials for the shirt.

    Which shirt? Did you manually convert the materials to Iray or was it an 'autocnversion'? Is the shirt's texture image based diffuse map or just a color? If just a color, what color (don't just say white...numeric RGB, please)?

  • DarkRepastDarkRepast Posts: 224
    edited June 2015

    It's the shirt from this: http://www.daz3d.com/waiter-uniform-for-genesis-2-male-s

    I didn't do anything to convert the materials and I couldn't find a shader which would fit the shirt's material (at least not in what I've got).

    Under diffuse color, it does have a JPG image but the colors are 255 255 255 and pretty much anywhere there's a color in this thing, that's the numeric RGB with the exception of the LuxRender Glossy Absorption Color which is 128 128 128.

    Post edited by DarkRepast on
  • SickleYieldSickleYield Posts: 7,644
    edited June 2015

    I would convert the shader to the Iray Uber Base and make sure the glossy layered weight is set to a high number and the emission color is black. It looks like maybe the original texture uses ambient or specular settings that don't auto-convert well.

    Post edited by SickleYield on
  • DarkRepastDarkRepast Posts: 224
    edited December 1969

    I converted to the Uber Base and Emission Color is black. The Glossy Layered Weight only goes to 1. Should I kick the limits off?

  • SickleYieldSickleYield Posts: 7,644
    edited June 2015

    No, 1 should work. Maybe turn up the roughness to 0.5 or so?

    Post edited by SickleYield on
  • Oso3DOso3D Posts: 15,045
    edited December 1969

    Things you should consider:
    Most colors should not be flat white. As others have noted, almost nothing is pure white in nature.

    I've found setting glossy color to no more than 192 value works better, most of the time. Also, if the diffuse map is bright or non-existent, putting a color of 192 in, better.

    Glossy 1 and Roughness 1 (or glossiness 0) will substantially boost brightness. I usually set both to .5 unless other values are really required.

  • D.RobinsonD.Robinson Posts: 283
    edited June 2015

    I don't know exactly what the setting does but for cloth materials like this i have had good success changing the base mixing to Weighted rather than metallcity or specular....Like i said i dont know what it does exactly but it seems to make it more cloth like in appearance.


    Daniel

    Post edited by D.Robinson on
  • DarkRepastDarkRepast Posts: 224
    edited December 1969

    I wanted to get a render out with the new settings & suggestions made.

    I'm attaching it here.

    To my eye, it does look better...but I've looked at it for a while.

    Shirt_Blown_Out_Example_2.jpg
    832 x 772 - 274K
  • DarkRepastDarkRepast Posts: 224
    edited December 1969

    I got two more replies that I didn't see before I posted my last example.

    I'm going to implement those ideas now.

    Thank you very much! I'll check back soon.

  • DarkRepastDarkRepast Posts: 224
    edited December 1969

    Here are the results of taking the various advice on this thread.

    I think THIS looks much better. What do you think?

    Shirt_Blown_Out_Example_3.jpg
    793 x 706 - 291K
  • mjc1016mjc1016 Posts: 15,001
    edited December 1969

    Looks more like cloth than plastic now.

  • barbultbarbult Posts: 24,872
    edited December 1969

    Much better! Which advice/settings did you end up using?

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