I am not a pro photographer and I chose micro 4/3 only because of the compact size and some good glass. However, even on this forum, I read that there are people who actually do a pro photography using micro 4/3 gear (some use OM-D as a second body for something like 5dmkIII, others report to do pro job with OM-D alone). Also Olympus will be trying to sell the E-M1 as a pro camera. However, I have hard time imagining it as all of my friends who do pro photography for living use FF gear (at least here in Ukraine) due to the number of reasons. First, FF gear produces images with shallow depth of field and micro 4/3 is simply not capable of reproducing it due to the sensor physical size (and it seems that many people who hire a photographer for a wedding or a child photo session really want those shallow dof portraits - at least in Ukraine). Second, FF has lots of fast glass (1,2-1,8) which is often cheaper than micro 4/3 equivalents therefore it is easier (and cheaper) to build the FF pro kit. Third, it seems that only OM-D is something like "splash" proofed, while Canikon bodies have good weather protection. Fourth, low light and high iso performance of the FF sensors is simply amazing, much superior to all micro 4/3 sensors. Fifth (the least important but still), most of the micro 4/3 simply look like point and shoot cameras, while most clients want to see pro looking bodies. Therefore, I can conclude that micro 4/3 was not developed as a "pro" prhotography gear due the physical limitations of the 4/3 sensors (and cameras in general) and poor collection of affordable pro glass (is there actually pro glass within micro 4/3 system?). Micro 4/3 cameras produce good images and I like my OM-D a lot, but they cannot compete with the results done by FF. So, the question is, is there such thing as "pro" photography with micro 4/3? How would you imagine it? Or perhaps all those who want to do pro photography should really consider FF? Is there any sense in making investments in very expensive micro 4/3 glass which cannot even compete with cheaper and superior FF equivalents if one actually considers a possibility of start doing pro photography? Of course I realize that FF will not make you a good photographer and I am not talking about it here. I am just interested in how (if at all) pro photography with micro 4/3 could look like.