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How do you setup the light and material for eyes that have shining reflection ?
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  • Total Posts: 12
  • Joined: 23 November 2011 02:29 AM

samsung-ch@t-335-shining-eye-wallpaper-300x225.jpg
I’m looking for something like that, eyes with shiny reflection.

Here’is my setting ( light, eyesball material , eyes crystal masterial )

eyesproblem.jpg

My result render i got something blurry in the eyes >"<.

normal5gravity.jpg

Please help me make the eyes have shiny reflection like the first picture.
Thanks a bucnh.



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  • Samab
  • Posted: 23 November 2011 08:41 PM

I’m not familiar with Vray, so don’t know the shaders and lights it has, but the principles shold be the same with any renderer.
To get reflections like in the photo you will need more than just a light, you need either things to reflect or an environment map. I would sugggest a HDRI environment to get reflections on the shiny surface.
Another thing to bear in mind for realistic eyes is not just materials and lighting, but the modeling. Rather than just a mapped sphere you could model a more anatomically correct eyeball, where the iris is a concave dish, the lens a clear convex shape over the iris, the pupil is a hole in the iris.
One way I have done this is modeling the eye from a sphere, the cornea spherical, with the iris as a concave part with a hole for the pupil, this is mapped with an SSS material. Then for the lens and wet coating a second slightly larger sphere around it with a convex lens over the iris, this has a clear shiny glass-like material.



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great samab… all important information… :)

Author: piashipe37

Replied: 26 November 2011 03:12 AM  
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Thanks alot Samab !
But i wonder what is SSS map.
In vray there’re SSSvray and vraymtl, vraymtl is the one i alsway use for mapping. For something selfillumation object i use vraylightmtl, but i don’t know how SSS map work , and for what purpose.
Can you explain that SSS material to me ?



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  • Samab
  • Posted: 23 November 2011 11:03 PM

SSS means Sub Surface Scattering. An SSS Material is a special shader that simulates types of material that some light goes in through the surface and is scattered beneath the surface, such as wax or human skin. I’m sure Vray must have some kind of SSS material like mental ray has. I use the mr SSS Fast Skin + shader.
You don’t have to use SSS, but it can be more realistic for organic things.



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Thankyou, that help me alot.



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Here’s my today render img.

testc.jpg

My progress still haven’t change much, although i’ve done modeling eyes that have 4 part : Pupil, Iris, Cornea, Eye white , and each of them have diffirent material and shading.

I even put on a HDRI map to my scene. But you see, in my result render today : there’s a reflection , but it’s so blurry and not shiny >"< ... How to set a light that not brighten the object in scene too much but it’s bright enough to give my eyes shiny reflections T_T…

Now i think there’s something wrong with my vray render setting



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  • RedCobra
  • Posted: 26 November 2011 01:55 AM

You decreased the value for the reflection Glossiness to 0.61, which gives a blurry reflection, try increasing it to 1, and add an HDRI background.



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Dear god, finally i have got some shiny in her eyes ! bahahahahahhahahaha !!!

pose3.jpg

I change a lot of things :
Cornea have bump map now ( noise, 30% )
Cornea have relection gloss = 0.96
Setup some light REALLY shiny and only affect spectacular+reflection.
And something that i forgot while sleeping.



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