Now that the EM5 II is out, I wonder how many people are mulling over the same decision. I won't go over the full specs, but I'll talk quickly about what is important to me and what I'm thinking. I currently use an EM5 I as a backup to my EM1, however, my EM5 has some lingering issues that wouldn't be economical to repair, so I'm looking for a replacement. Size/Weight: EM5II weighs in at only 30g less, which is practically no difference at all. Its a little smaller, but to me weight is more important as either camera is about the same size, too big to fit in a pocket (I have an RX100 for that), but small enough to fit in a very small bag and comfortably carry all day. The EM1 has a much better and more comfortable grip (assuming based on my experience with EM5 I), even though the EM1 is fractionally bigger and heavier, the bigger grip makes handling and balance with medium to large size lenses much more comfortable, and the stress of the camera on my wrist is significantly reduced due to the better balance and weight distribution. I often carry around the EM1 with one hand and no strap, and doing the same with the EM5 is unnerving due to the small/slippery grip. Ergonomics/controls: Again the EM1 has a much more comfortable grip. I also prefer the control layout on the EM1, to be fair I haven't used an EM5 II yet, but I can tell just by looking at it that some of the FN buttons will be harder to reach than they are on the EM1. Video/IBIS: Looks like the EM5II is a clear winner here with better frame ranges and codec, but I don't shoot much video. IBIS also appears to be improved, however, the EM1 IBIS is already fantastic. CAF: Not sure on this one, I'll be curious to see how the EM1 with 3.0 firmware compares to the EM5II. I don't shoot action very often so this isn't a big concern. Image quality: No real difference here. EM5 has multi-shot high res mode, which would be fun to play with, but not something I would use frequently as I only bring a tripod when doing HDR work. Bracketing: EM1 wins here with up to 7 shots at 2EV (1EV for EM5II), which is very important for 360 degree HDR panorama work that I do. Buffer: Can't find buffer specs for EM5II but I assume the EM1 wins here. Shutter: EM5II has a very nice max shutter of 1/16000, I was expecting 1/4000 and am pleasantly surprised here. However, its not a mechanical shutter at those speeds, and I;m not sure if there are any implications on image quality (10 bit vs 12 bit like other cameras with electronic shutters, rolling/jello effect). 1/8000th mechanical shutter on EM1 is a known quantity that I am very happy with. Screen: I may be in the minority, but I hate fully articulating screens, as I find it a pain to have to flip the screen out to the side just to tilt it up/down a little (my most frequent use case for a tilting screen), so EM1 wins here for me as well. Price: $1400 for EM1 and $1100 for EM5II, EM5II wins on face value if we compare retail, however the EM1 regularly sells for $1200 on sale from the major outlets, and can be purchased for much less from Asia ($1585 from Taiwan WITH 12-40/2.8), used prices are also around $800-900, which is probably what I would do. Overall I'm leaning towards picking up a second EM1 used, rather than the EM5II. Now to be clear, this is how I look at the differences for my personal shooting style, I'm not trying to declare one or other better in absolute terms. I'm also curious to know who else has the same dilemma, and how you view the various differences in these two cameras. If I'm missing some glaring difference that would be good to know as well!