Attached Link: http://www.cocs.com/poser/compositing.htm

One option is to use a real photo as a background. Matching lighting and creating shadows may be a bit of a challenge. Another way is to composite your image using an image manipulation program like Photoshop. You can find a tutorial for that at the link. In the tutorial, they talk about removing a background color to make everything but the figure in the poser picture transparant. However, images can be rendered that have transparancy information already included in them. This info is called an "alpha channel" and is part of many file types, included .tiff, .tga, and .pct files. I'm you're Mac based use the 32-bit .pct format. If you're Windows based, I'd use the .tiff format.

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