The rather tiny, yet ultra-wide 11mm f/4.5 Laowa (in native Z-mount!) is a pleasant surprise. Despite its enormous 126 degr. angle of view, it delivers crisp and clear images with almost no detectable colour fringing, and a flat field as well -- amazing. OK, there is severe light fall-off to the periphery when you shoot it wide open, which at f/4.5 lens "speed" happens a lot in winter in my part of the world. Focusing this tiny lens is challenging as well. As it is so sharp, one has to do precise focusing and cannot rely on zone focusing for optimal results.
Towards the near limit of 19cm, the lens shade and photographer's shade tend to interfere, so getting shadow-free results is not always easy. Here is a snapshot from my regular hang-out, where I'm enjoying excellent cappucino (and waffles) while reading the news paper.
