As well as other types I'm sure. It's about time for Oly and Panny to step up with some big glass. I mostly want to shoot wildlife these days and the two long zooms we have do not cut it. The m4/3 genre is mature enough with enough users now that these two companies can afford to make more prime lenses. An f2.8 300mm would go in my bag as soon as it appeared on the market. Yes I know it would be huge. And heavy. And ridiculously expensive. But I need it. Yeah a big prime telephoto would be a bit of a loss leader at first. But it would convince a lot of DSLR users sitting on the fence that m4/3 was here to stay and ready to play against the big boys.