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Grayscale image of distance from camera
I’m wondering if there is an easy way to create a rendered image of a 3D model that comes out in grayscale according to its depth (or distance from the camera). Think of it as the reverse of a bump map. If I had a 3D model and I wanted to create a grayscale image to be used as a bump map (not that it makes much sense, but it’s what I need), how would I go about doing that in C4D?