<p>I've recently picked up both the 50mm f3.5 macro and the 200mm f4.0 tele. Both were reasonably priced and in excellent condition. Using a Fotasy adapter ($15 on Amazon) and mounted on my Olympus M10. I really couldn't have been more pleased. Images are sharp..as long as I'm paying attention to getting the correct focus. The macro, in particular, really shows it's stuff when working in close..2 or 3 feet or closer..as that's where it's really corrected for. Night and day difference versus my Panny 14-42 at the same distance. Not quite so much when used further out. Manual focus in macro is sort of a natural anyway, so it's not a big deal at all..especially when you can assign a dedicated button to magnify. And with stopped down operation in aperture preferred mode, you've got a nice level of simplicity. I'm also loving the 200 with the crop factor on the M10..sharp with nice color. These lenses are a great reminder that it's all about the glass. They also bring me right back to the mid 70's when I shot Canon gear as new stuff.</p>