I know that a lot of Sony NEX users (partly due to the poor native lens selection!) have bought their NEX3/5 cameras basically to use as "digital backs" to legacy glass they own and I wondered if any m4/3 users use exclusively or almost exclusively legacy glass on theirs? I only own the one native lens; the Olympus 17mm, its a decent enough lens, nice size, focal length although wish it was a little quicker sometimes! But it was cheap (£100 with the EP1 Kit) But I've started to dabble in MF lenses, a Hexanon 135mm f3.5 which has been nice to use and very cheap! As I don't use longer focal length often so a native (40-150 or 45-200 would be a waste!) But I've also started using a Canon FD 50 f1.8 over the weekend and really enjoyed it! Manual focusing at a shorter focal lenth was much easier than I imagined it might be and I actually enjoyed being out taking shots with the lens much more than I have with anything else over the last 12 months. But its got me to thinking that perhaps I could survive with only legacy glass, the only issue I could see could be wide angle as obviously wide on a 35mm isn't the same as wide on a crop sensor but I can keep saving for the Panasonic 14/20mm for that! But really this thread was just to see what manual lenses other are using and if you use them the majority of the time on your m4/3 body!