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# Look Development with Look Files

The primary use for look files is to store the changes from one state of the scene graph to another. This is how a look development artist records the changes from a bare asset to its completed state. Other departments can use look files to record:

• the renderer settings for a show (recorded at /root), such as the renderer, resolution and what AOVs to output.

• a material palette, used either within the look development department or later during lighting.