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- Composite: all your light emitters will be stored as different layers in one multi-layered file, in those formats that allow multiple layers (EXR, TIFF and MXI). For the rest of the formats (TGA, PNG, JPG, BMP, JPG2000 and HDR) the emitters will be stored as independent files, as those formats do not support multiple image layers inside.
- Separate: you will get a collection of individual files corresponding to the different emitters in the scene.
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