Arvid Schneider Shows How to Set Up Light Groups and LPE’s Using Render Settings and Python.
Looking for a more flexible way to create LPE’s rather than manually creating them using the Render Settings Panel in Maya? ILM Lighting TD Arvid Schneider shows a way to use Python scripting and Light Path Expressions together.
Light Path Expressions or LPE’s can obtain light paths from a scene using an expression language. They can be a flexible way to composite a scene, breaking down each light’s contribution in a rendering. If you need you need to get caught up on light path expressions, then make sure that you check out this introduction here.
Arvid walks through creating light groups manually and then shows the benefit of using Python to script something that can work a lot better for most use cases.
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