Mark,

I suppose it matters what it is you want to show. For a long wide scene, then Bruno's correct, you want a shorter lens..28 or even smaller. But if you're showing full figures, full height, you may want a much less-distorted camera focal length, like 50 or even 100...depends.

Do you have an image similar to the one you want to create? That would be my first step-- do some web research and piece together what it is you want to do.

Best of luck! -Chipp