From the course: Maya: Rendering in Arnold 6

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Focusing lens radius for a collimated beam

Focusing lens radius for a collimated beam - Maya Tutorial

From the course: Maya: Rendering in Arnold 6

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Focusing lens radius for a collimated beam

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- [Instructor] To simulate the effect of lenses and reflectors, the Arnold Lens Radius attribute focuses the rays of a spotlight into a collimated beam. Let's do a rendering of where we left it in the previous movie, with four spotlights recessed into the ceiling. Click in the Camera Spotlights viewport, and choose Arnold, Render. When it's finished, create a snapshot, and select all of the lights in any viewport. And in the Channel Box, go into the Shape Node Attributes. In the previous movie, we exposed some of these key attributes in the Channel Box, using the Channel Control window. Normally, we'd need to go into the Attribute Editor to access the attributes such as Radius and Lens Radius. The AI Radius is the physical radius of the light, and it controls the size of the light-emitting disc. The illumination spreads out in a cone shape, and the intensity will decay according to the inverse square law, also know as…

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