I recently snagged a silver OM-D kit with the MMF-3, and also picked up a 4/3 14-54 II CDAF-enabled zoom lens to see if it can replace the rather underwhelming 12-50 kit lens. My first impressions are as follows: -AF speed isn't noticeably faster than on my old E-P2. -It is bulky enough to cast large shadows when using the clip-on flash at full wide, and also gets in the way of the AF assist light, which could be a problem with other large zooms as well. -The wider aperture makes a huge difference in low light. I intend to keep both it and the kit lens for a while to see which one's foibles are least annoying. Might even post some pictures .