> How do you zoom-out ?
> If adjusting Feet, notice the radius of cylinder are not function of Feet.

Zooming out is just changing the y-value for the camera.
(see other alternate camera definitions commented out)

"Feet" is a constant (12), so that I can stay sane when sizing and 
positioning things.  The cylinders are therefore 6 inches in diameter, 
since my sanity benefits from having 1 POV Unit = 1 inch.  Because I'm 
all non-metric like that.

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