I have the ZEISS Touit 50mm macro for my Sony NEX 3NL to try out for a few weeks. I have missed true macro ability with the kit 16-50mm zoom. This shot is just messing around in the yard yesterday. How close can I go? I used the “background defocus” tool in Superior Auto to get a smaller aperture and more depth of field,  but that pushed the ISO up higher than I would have liked. Still, not bad for a hand-held, natural light shot.

Sony NEX 3NL with ZEISS Touit 50mm macro. f11 @ ISO 1600 @ 1/500th. Processed in Snapseed on my tablet.