
This one's really for sagarmatha.
It's not a particularly interesting image, but it's not cropped and the subject frame is 6 mm wide (6X in 35 mm equivalent).
Shot this afternoon with an SMC Pentax-A f/1.7 50 mm lens salvaged from an old film camera, set at f/11, reversed on the front of the 55-200 zoom kit lens that came with my Canon 300D five years ago. Illumination was from a single Pentax AF200T flash (about 25 years old) in manual mode at 1/4 power, diffused with paper towel, held by hand at the end of the lens. The top of the frame is dark because it was shadowed by a leaf.
Despite all the difficulties you might imagine with such a lashed-together apparatus, the big problems were simply framing and focus. With a 6 mm field width and under 0.5 mm DOF even at this 800-pixels size, things were bouncing around all over the place.
I hope this helps, somehow or other.

--Rik