that infuriates me the most out of Micro 4/3 is the space-time-ripping distortion levels on the lenses. They hide this optical flaw in software. Many times, this is invisible, but other times, it is not.
Fuji's lenses likewise have used this trick on a couple of occasions, the 18mm comes to mind, which pissed me off. But Fuji has brought out the big guns for its newest 14mm lens. I'm talking distortion of a nearly-imperceptible 0.22%. Compare that to Olympus' similarly-priced 12mm lens with distortion of a very noticeable 5.4%. The Olympus is faster by a full stop, but the Fuji is wider by 3mm equivalent.
This is a good lens at a fair price. It's a sad day we live in when we must praise a company for simply making a decent product.