Loading...
> >

How do I do realistic skin with Iray?

nokoteb99nokoteb99 Posts: 931
in Technical Help (nuts n bolts)

I've seen a lot of iRay renders people have posted and they look really good. Waxy sub surface scatter skin.  I dont' know how to do it, is there an iray product for it?  Is it all have to do with what lighting you use? or is there a specific thing for the skin that you have to use?

 

examples http://www.daz3d.com/galleryimage/image/226856/candid_730_auto.png

examples http://www.daz3d.com/gallery/#images/216906

examples http://www.daz3d.com/galleryimage/image/199196/practice_full.jpg

examples http://www.daz3d.com/galleryimage/image/190091/elly9_full.jpg

NOtice in the female pictures how the skin looks fresh and translucent and skin like glowy.

Now look at mine. plain boring. The skin is not tranlucent, it looks kind of plastic( but not as much as 3DDelight). even the chest line looks plastic.

see my render in the attachment.

How do i get that subsurfacescatter that other people get in their renders. ?

SampleSkinPlastic.jpg
800 x 600 - 184K

Comments

  • Drogo NazhurDrogo Nazhur Posts: 1,112
    edited January 2017

    I'm not an expert on this but I think that it may have something to do with the skin of the character. Check out my attachment. It is the exact same character (same pose, same hair, same makeup, etc.) but the only difference is the skin that I have loaded. Now, at least to me, the version on the right looks almost like an actual photograph of a real person while the version on the left can clearly be idenitified as an illustration.

    Hope that helps.

    samecharacter.png
    1078 x 741 - 1M
    Post edited by Drogo Nazhur on
  • nokoteb99nokoteb99 Posts: 931

    Yeah i'm no expert either. thanks for the advice.

    I followed a skin tutorial for iray and  much better than before. Wish some of the people who do great skins would share their tips

     

    BetterSkin.jpg
    640 x 480 - 77K
  • Drogo NazhurDrogo Nazhur Posts: 1,112

    Got a link for that tutorial?

  • nokoteb99nokoteb99 Posts: 931

    Here's the link. Although mine didn't turrn out that great.

    http://thinkdrawart.com/daz-studio-iray-skin-tutorial

  • nonesuch00nonesuch00 Posts: 18,120

    You're doing the right thing. That tutorial's methods is what most people that render in DAZ Studio do.

    Other things you can do are:

    1. Render to 99.5% Convergence Ratio to completion (may take a long time)

    2. Render in UHD resolution

    3. Adjust the Translucency Weght of ONLY the skin and nail surfaces to 0.1 (arms, ears, face, legs, torso, fingernails, toenails - if 0.1 is too low try higher values, most set it to between 0.4 - 0.6)

    4. Use portrait studio light setups for 'dramatic lighting'

    5. Use Google Nik Collection or other, eg Photoshop, postwork filters to slightly blur the light in the render making it more difficult to see that it is a render

  • nokoteb99nokoteb99 Posts: 931

    Thanks nonsuch. But i still don't get what i'm aiming for. I want that waxy skin feel.  For example this litle

    example   attachment. You see how it glows and has translucency and looks milky? In my renders above i don't get any of that. i wonder how to do it.

    Skin1.png
    713 x 359 - 260K
  • nonesuch00nonesuch00 Posts: 18,120
    nokoteb99 said:

    Thanks nonsuch. But i still don't get what i'm aiming for. I want that waxy skin feel.  For example this litle

    example   attachment. You see how it glows and has translucency and looks milky? In my renders above i don't get any of that. i wonder how to do it.

    The attached picture of the red waxy man is blurred. You have to blur it in Photoshop, Gimp, or Nik Collection of filters and I think you will get the same waxy feel. Also take note the the skin is darker colored so it shows light reflection more than a lighter peach colored skin would.

  • nokoteb99nokoteb99 Posts: 931

    Oh i see. So you think my render above of the strong guy was good enough?

  • fastbike1fastbike1 Posts: 4,077

    Real skin doesn't glow. Any effect like that comes from light transmission through the skin. If you want that effect you need more than the correct translucency settings in the skin, you need the right lighting setup.

    That will generally require the figure to be between some portion of the lighting and the viewer or to be at a fairly narrow angle to the figure (Mattymanx often has some lighting set to a shallow angle on the figure).

  • AndySAndyS Posts: 1,438

    So you're talking about something like this?

    Ryan Skin Arnold wo TL-Map.jpg
    500 x 450 - 19K
  • nokoteb99nokoteb99 Posts: 931
    AndyS said:

    So you're talking about something like this?

    Yeah.

  • nokoteb99nokoteb99 Posts: 931
    fastbike1 said:

    Real skin doesn't glow. Any effect like that comes from light transmission through the skin. If you want that effect you need more than the correct translucency settings in the skin, you need the right lighting setup.

    That will generally require the figure to be between some portion of the lighting and the viewer or to be at a fairly narrow angle to the figure (Mattymanx often has some lighting set to a shallow angle on the figure).

    yeah i don't mean glow. i mean milky/waxy and translusent a bit.  Here's a Hulk picture i found done in DAZ. This is what i mean, except i would do it in real Skin color

     

    http://www.daz3d.com/forums/uploads/thumbnails/FileUpload/fd/363c1bbb3a76e3b198df6a498711eb.jpg

  • SickleYieldSickleYield Posts: 7,634
    Turn up the SSS also, then. Daz's skins from the Materials folder of the G3's have some good examples except that I feel they use SSS a bit TOO high. Lately I've also been experimenting with a low value of a thin film top coat (5-30% depending on lights) plus about .01 metallic flakes because high transmissivity interferes with the regular glossiness.
    HalakAvatarLarge.jpg
    1029 x 1029 - 845K
  • nonesuch00nonesuch00 Posts: 18,120

    Well for the Hulk effect I recommend removed all the textures & just using colors, glossiness, translucncy, & so forth. The things talked about in the ealier tutorial about making skin look wet.

  • nokoteb99nokoteb99 Posts: 931
    AndyS said:

    So you're talking about something like this?

    AndyS, yeah. HOw to achieve that?

    nonesuch00, that was just an example. Of course i would like it with Textures on, i was just trying to say i wanted it tranlucent and milky/waxy

  • AndySAndyS Posts: 1,438
    edited January 2017

    Hm,

     

    long time ago  wink  there was a thread here in this forum about this topic.
    But as an orientation, you may start with this tutorial. But I recommend to set the "Base Color Effect" to "Scatter and Transmit". And I prefer the skin texture map in the color for Translucency instead the simple color.

    The rest is playing around with the parameters.

    Post edited by AndyS on
  • nonesuch00nonesuch00 Posts: 18,120
    edited January 2017
    nokoteb99 said:
    AndyS said:

    So you're talking about something like this?

    AndyS, yeah. HOw to achieve that?

    nonesuch00, that was just an example. Of course i would like it with Textures on, i was just trying to say i wanted it tranlucent and milky/waxy

    Well now you have a problem because if the source textures you use don't look milky & waxy there is no way you can make them look milky and waxy.

    What you are seeing in the pictures you like that do use textures are post-processing slight blur effects of bright areas.

    Post edited by nonesuch00 on
  • Kevin SandersonKevin Sanderson Posts: 1,643

    Really examine characters skins in the promo pictures and buy just the good ones. Then get a good lighting set. Really look at the promo pictures closely. You'll see which sets are good. And then you can tweak and experiment to your heart's content. Check real photos in magazines or online to get a good idea of how skin and light should be working together. If you are going the totally free route, then good luck. I didn't start getting good results until I bought the good stuff.

  • ShawnBoothShawnBooth Posts: 465

    It's all about taking the time to experiment. One set of settings isn't going to work for all renders. You have to set up your lights and tweak them to get the desired lighting. Then play with skin settings until they reflect what you're after.

    There is no one click/purchase solution.

  • Oso3DOso3D Posts: 15,009

    I have free skin shaders. They aren't perfect but you can add maps as you like and experiment.

     

Sign In or Register to comment.