Advanced Subsurface Scattering Techniques in Maya and mental ray

This tutorial covers the full range of Maya's fast subsurface shaders, with a detailed examination of how to make human skin and render it in mental ray. Software required: Maya 2012, NUKE 6.3 .
Course info
Level
Advanced
Updated
Nov 1, 2012
Duration
1h 50m
Table of contents
Description
Course info
Level
Advanced
Updated
Nov 1, 2012
Duration
1h 50m
Description

This tutorial covers the full range of Maya's fast subsurface shaders, with a detailed examination of how to make human skin and render it in mental ray. We will begin with a clear definition and explanation of the complex lighting behavior of subsurface scatter. Then we will examine how the set of 10 Maya shaders are used to simulate this lighting effect. Detailed examinations of all subsurface scatter shader variables are demonstrated with examples in a variety of lighting conditions. The last set of lessons goes deeper into creating shader networks for human skin. As we learn about the behavior of skin in light, we will create two complex shader networks that combine the fast_skin_maya shader with mia shader in order to use the strengths of each. Also, we will cover rendering these shaders out in passes so all layers of skin, epidermal, sub-dermal, diffuse, back scatter, and more can be opened in NUKE layers and modified separately. Infinite, 3D Head Scan by Lee Perry-Smith is licensed under a Creative Commons Attribution 3.0 Unported License. Based on a work at Infinite-Realities - http://www.ir-ltd.net/ Software required: Maya 2012, NUKE 6.3.

About the author
About the author

Clearly the Visual Effects lifestyle has been a lifesaver for Jon Tojek.

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Section Introduction Transcripts
Section Introduction Transcripts

Introduction and Project Overview
Hello there. My name is Jon Tojek and I'm a senior lighting and Lookdev td who works international freelance VFX for film and commercials. My last three jobs were at ILM, Sony, and as soon as I finish recording these videos, Weta, where I'll be lighting on the Hobbit. In my last 12 years working on Hollywood films, I have noticed the use of subsurface scattering go from being rare to currently being common and essential anytime that plants, animals, or humans are digitally rendered. In this course we're going to describe what subsurface scattering physically is, how do we approximate this with Maya and Mental Ray shaders, and specifically dive into the details for making realistic human skin. We will create shader networks that can render the skin out into EXR passes for NUKE as well as combining the fast skin shader with physically accurate MIA shaders to get Fresnel type reflection and wavelength dependence scatter. I hope you find this useful and now we should begin.