From the course: Maya: Advanced Materials

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Using IOR to control reflectivity

Using IOR to control reflectivity - Maya Tutorial

From the course: Maya: Advanced Materials

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Using IOR to control reflectivity

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- Index of refraction or IOR is a measure of the real-world density of a material. And as the name index of refraction indicates, it controls the amount of bending of light as it moves from one transparent material to another. To control the strength of refractions, you adjust the IOR parameter. But notice that IOR is in the Specular section not in the Transmission section, which deals with transparency. And the reason IOR is in the Specular section is because it also controls the strength of highlights. And it controls not just the strength of highlights overall, but the strength of highlights at different angles to the camera. So to see this more clearly I'll turn the base weight down to zero, and with a specular weight of one we can see those highlights without any other elements present. So with the IOR at its default of 1.5 we are seeing the effect of the density of glass. And there are some presets here…

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