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I know that to do compositing correctly it's much easier to render objects against a completely black (0) or white (1) background, so the pre-multiplying works ok, but sometimes in Photoshop it's nice just to be able to open a render where the alpha is the sky, separate them and do slight tweaks.
Could we have that option on the dome light, as quite a lot of the time i use a HDR sky mapped to a dome light, and it's much more work to separate out the sky after i've rendered the image by then having to generate matte's etc.
Could we have that option on the dome light, as quite a lot of the time i use a HDR sky mapped to a dome light, and it's much more work to separate out the sky after i've rendered the image by then having to generate matte's etc.
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