Okay, so I'm very new to interchangeable lenses, however, I now know a bit. What I'm not clear on is listed in the following questions: 1) The Nokton 25mm f/0.95 is a manual focus - why did they not allow it to use the GH2 autofocus? Is the autofocus feature on the GH2 only compatible with panasonic lenses? 2) Are micro 4/3 lenses more expensive than other lenses of similar quality? For the lens mentioned above, for example, would it be possible to buy a cheaper lens that is sized differently and get an adapter? If so, what lens? 3) Related to 2), is using an adapted lens inherently going to be less quality than using one that is made for micro 4/3? 4) What are the most common lens mount sizes? Which ones are usually adapted to micro 4/3? 5) I've read that if you get a lens that is too wide angle you get fisheye effect - on a GH2, the mm is doubled so if you have a 20mm it will effectively be 40mm. What's the minimum mm that permits you to avoid all distortion but have the widest view, and therefore, a shallower DOF? Thanks in advance. I just ordered the GH2 from Pana.