Hi folks, I have the Olympus 4/3 (not micro 4/3) 11-22/2.8-3.5 lens that I use on me E-M5. This lens one of my all-time favorites, there's just something about it that's special, even though the focusing isn't fast. I've been wondering about the Panasonic 20/1.7 ever since I got the camera years ago, and since it fits in the focal length range of the 11-22, I wonder how different it is, compared with the 11-22 at 20. Obviously the f1.7 wide-open lets in a lot more light than the 11-22 can, with f3.5 the widest it goes at 20mm. And the Panasonic probably focuses faster too, even though I've heard it's slow compared with, for example, the 45/1.8. Does anyone have both the 11-22 and the 20? Aside from the light-gathering capabilities and focusing speed, how do they compare? What are the image quality and image character differences? Thanks!