So, just as the title suggests....optically, from my research it seems that this would be a great lens. I've been presented with the opportunity to grab this rare lens (discontinued in like 2009, I think...crying shame too!) for a decent price. I'd be using it not only with my OMD but also my GH2 for video, a good deal of low light stuff (inside salsa clubs mainly). Does anyone at all have experience using this with the OMD/GH2? I believe the lens isn't optimized for CDAF unlike the oly 14-54 mkII, but I wanted to know if the autofocus is acceptable. I wonder if the OMD's focus assist light works with it....? I do realize there are plenty of primes available, but this zoom may present a flexibility that would help my purposes. Any input would be greatly appreciated.