Little roundup for me, with the SMC-A 50mm f/2.8 Macro.
It is one of those lenses that makes it very difficult to take a bad photo. A very natural field-of-view, sharpness up the wazoo, the ability to focus very closely, very little in the way of aberrations.
The only slight let down for me, really, is the hexagonal aperture. It's something I don't mind from time-to-time, but am not fond of featuring in every shot. I much prefer rounded apertures for macro work, where the shapes are a lot less distracting.
A couple of favourites from the month for me:
(The noise-reduced version of this is perhaps my favourite of the year, above)