I bought my E-M10 with the idea of never using adapted lenses on it. The E-M10 is a brilliant little camera. Paired with the P14 and P20 it makes for a fun, minimalist kit (size-wise). I have been thinking that adding a portrait focal length like the O45 or P42.5 would give me the classic 28, 40, 90 focal length set of the Leica CL/Minolta CLE. While I'm deciding I though that perhaps drafting one of my adapted lenses that usually live on my NEX would work. I happened to have an adapter for my SMC Pentax 50/1.4 and decided to give it a try. Let's just say that my original decision to not use adapted lenses was a good one. Well, it technically works in that I can make an image but I am a bit surprised at how clunky the entire process felt. It's the little things too that really make the difference. You need to turn magnify off instead of it turning off when you press the shutter, you have to turn peaking on rather than it simply being on and the peaking itself is so incredibly weak that you're better off just using magnification and calling it good. I know that many folks use adapted lenses with great success but clearly I am not one of those people. For me the NEX (or any Sony for that matter) makes the ideal digital back for adapted lenses. Maybe its my familiarity with the process on the NEX but it works really well for me and I think I'll just leave it that way. I really like the E-M10 and and having a lot of fun using it but I'll stick with native lenses. I'm not bashing the camera nor saying you can't use adapted lenses on it because a lot of folks do but I sure didn't like it. Since Olympus and Sony have been sharing technology and Olympus cameras use Sony sensors you'd think that focus peaking could have been of those things that made the jump.