Got this lens today. First impression, the lens is fantastic. Great build quality (definately premium lens), feels noticeably smaller and lighter than Oly 40-150 (even though it's 10g heavier or so) probably due to much smaller diameter and internal zooming. The lens focuses noticeably faster than Oly 40-150 (which is already fast). Being a P&S shooter most of my life, I LOVE power zooming. But for those who don't the lens also features regular manual zooming option. It's an overcast day today, I fired a few test shots mostly at 175mm at various distances and it is instantly obvious to me that the lens is sharper than Oly 40-150 when viewing 100% on camera screen and then subsequently on the computer (vs Oly at 150mm f5.6). I will be shooting with this lens during the weekend. In particular, I am interested how it performs at infinity and perhaps even more so - its contrast and color rendition. The silver color of the lens base matches that of E-PM1 flash (both clip-on and FL-300R). I think for once I might prefer silver lens which somehow looks smaller (of course it's at least half black, LOL). The lens is lighter than E-PM1 camera body and balances very well, it looks and handles like a super zoom P&S cam to me. Excuse my iPhone pics (the only other camera I own).