Gross pics, but anyhow I share your enthusiasm. This thing just cannot take a soft image, short of deliberately missfocussing. (Even there, the narrow FOV helps nail the focus target.
) It's the sharpest of all my primes (15, 21, 31, 40's, 50's, 55, and 100), by a large margin, at all apertures.
On that subject, the only bad thing I have to say about the lens is the long focus throw without the range limiter, where the AF can get fooled and cycle through the whole range. It's a very minor issue to me but feel compelled to acknowledge it because I know it bugs some others.