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Keep in mind that in order to get the alpha channel embedded in the main render file (in those formats that support embedded alpha), you have to set the exportation of the alpha channel at the same bit depth as the main render file. Otherwise it will be exported to an independent file with the indicated bit depth and format.
The MXI files (containing all the emitters and all the extra channels) can be opened in Maxwell Render, or in Adobe Photoshop, Adobe After Effects and Nuke through the Import MXI connection plug-ins.
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Note: If you need to adjust the color of your emitters in your postproduction platform (rather than in Maxwell Render), then you don't need to launch your render with the Color Multilight mode (which is only involved in the color adjustments inside Maxwell Render). You may prefer to use the Intensity Multilight mode, as it will preserve all your color adjusting capabilities in postproduction, while generating a much smaller MXI file. |
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