Hi, I've got a couple f3.5 7" projector lenses lying around that I want to test out on a speed graphic because they're pretty fast and should should create some interesting bokeh swirl.
First off, what's the difference between mounting the lens normally vs reversed? I've read that in theory reversing a lens makes it behave as a macro lens, but I couldn't really tell there was much of a difference, except reversed seemed to project a larger circle of coverage... I assume this is because the lens elements are all at the far half-end of a long narrow plastic tube. Could I increase the circle of coverage by sawing off the excess tubing?
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