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• $OCIO: Use the color space defined by your systems environment variable. Typically sRGB.
• Off:  Scene Linear is defined as the scene-wide color space.
• ACES1.2: Use the ACES 1.2 color encoding system that ships with RenderMan 24.
• Filmic Blender: Use the popular BT.709 color space.
• Custom: Allows for a custom color space file to be specified.
  
  

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