Okay... I read the posts re: the aperture blade noise of the PL25 when mounted on Oly bodies (thanks Soundimageplus), but I went ahead and ordered this week anyway, figuring that maybe I wouldn't notice, or that there would be a firmware fix on the way. I had it out today on my E-P3 in moderate sunlight and, ummm, yeah, it is fairly loud and happens frequently. I hadn't noticed this on my 20mm before, so threw that on to test. The 20's aperture blades click the same amount when mounted in the same situation, but the blades are quiet enough to mostly get drowned out by background noise. The PL25 aperture blades are probably 2-3X as loud when working. Curious what other Oly and new PL25 owners are thinking? Do I need to just manage my expectations on this lens and use only in low light situations? Right now, it seems like this lens is all of a sudden a bit specialized for me and, given its price tag, I am considering a return.