I bought a brand new E-M1 a few months ago and have used it maybe 5 times due to time restraints. I remember shooting some portraits about a month ago where it kind of froze up (for lack of a better description) and I shut it off and powered back on and it was fine and continued shooting. Well I was shooting yesterday at the zoo really trying it out and believe I had a 75-300mm Oly lens on it and was zoomed all the way out and it totally froze and the image was stuck on the EVF and no buttons would respond or no affect pressing the shutter again. I powered back off and on again - the image was still there and I was able to shoot fine the rest of the day. I am wondering if I should send it in for repair as this does not seem normal. I have owned close to twenty different cameras (mostly Nikon DSLRs) and never experienced anything like this. I am going to update the firmware and see if that helps. On a side note I also noticed battery life is really short, shot for maybe 150 frames all through the EVF w/ no flash and powered off between most of the shots and had to replace a full new battery. This seemed really low to me.