It has been 4 years of full-frame goodness, from my very first 5D to the 5D3, having full-frame seemed to be pivotal to the job. Recently, the 5D3 has been bugging me with hard to see AF points (in the dark), crippled dual card system, and weight. These things when paired with anything larger than a 35mm take their toll after a long day's work. I never got into micro 4/3s. A long time ago I played with a GF-1. I didn't like it. That was the last of m4/3. Until this week. I don't know what sparked the idea, but once it crept in, it manifested quickly. I bought 2 EM1s on NYE and paired it with a Panasonic 25mm (reason being it is a 50mm equivalent on 35mm). I even splurged on a battery grip for $221 when I was too cheap to buy a battery grip for the 5D3. I've owned and used Canon and Nikon extensively. Apart from the D4 and 1Dx, I've owned them all. The last brand change was the brand change to end all brand changes. Or so I thought. It was from D3s/D3 combo to 5D3s. The technology was just better. As a wedding photographer, my criteria for a viable system revolves around autofocusing ability, lenses, and cost effectiveness. AF is the top priority with lens choice and cost effectiveness having shared import. Canon's AI-SERVO on the 5D3 has been very good. For the past year, it has served me well. Of course there have been misfocuses; party due to poor light or user error, but for the majority, tracking with a single AF-point has been fantastic on the MK3. But buffer replenishing rate with a CF + SD was a joke. Having redundancy was a farce. I was also extremely disappointed with the clustered nature of AF points on all full-frame cameras. With the OM-D series, touch anywhere, yes anywhere on the screen (which maps the entire sensor I presume) and it focuses. ANYWHERE! Top right corner, bottom left corner? Not a problem. 6-months ago, I got my parents the original OM-D (E-M5). I bought it solely due to NAMCO's videos. The in-built stabilisation was epic. The technology was just better. "A smaller sensor? Why would you move to a smaller sensor?" I have been asked. Why? Why not? Looking at my work, have I really needed full-frame? The answer was a deafening 'no'. I must profess, ever since changing to the 5D3, I have forgotten how to meter. I've been a liveview exposure chimper for over a year now. I sure have regressed The beauty of the E-M1's EVF is that everything I like about liveview chimping is presented within the EVF. No need to meter. Just adjust shutterspeed/ISO to suit. Awesome. No need to wait for the flappin' mirror to flip up. No wasting time to check exposure. It is all right there within the EVF. And Oly are correct in saying that the lag in the EVF is imperceivable to most naked eyes. I guess I fit that segment. There is no lag. Much wow. My last EVF (x100s) was l-a-g to the max. The burst mode is insane. I suppose it is nothing compared to any 1-series but from a 5D3, being able to pop off 50 raw files non-stop is incredible. Obviously 16MP vs 22MP is a sizeable gap but still, I can burst all I want. In raw. Without pants on. Winning. What are the dangers of migrating away from Canon/Nikon? Loss of NPS/CPS. Not that I ever had it. I have insurance and rather have the flexibility of liquidity to buy replacements as I see fit. Obviously, there needs to be stock but to date, this method has worked well for me. There are definitely a few things I'm unhappy with the E-M1. For starters, the lack of battery meter is stupid. I have to set a warning to show once 50% has been expended. I'm sure I will discover more subjective critique of the system as I use it more. I am also a bit disappointed with the Panasonic 25/1.4. In all fairness however, it does seem to share a lot of quirks with its 35mm equiv (Canon 50/1.4) in terms of build quality and AF snappiness. Funny that. Real world use, nothing is as difficult as a family portrait session to me. Weddings are easy, they follow a pattern and routine. Go to enough weddings and you will know where to be, where to point said camera, and when to press the button. Children are terrifying. My last family session was 2 weeks ago. I struggled with focusing (mostly because I was shooting at f/2.2-2.5). The children moved a lot. Erratically. Without warning. Randomly. I spent most of the time changing AF points and recomposing and hoping my exposure was right. At this particular session, I turned face detection priority off. I think I should have left it on in hindsight. For the first 15-minutes (where the subjects were mostly stationary), I used AF-S. Then when the subjects were moving and running/walking towards me, I switched to AF-C. The AF is insanely accurate. I'm simply blown away, especially when combined with 6.5fps burst rate. The following photos are nothing special. I think it merely demonstrates the camera and lens' ability to achieve fast and accurate focus. When my other lenses arrive, I'll be able to provide a more rounded review. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. I think it did great. The main (and most obvious) difference to my eye is the depth of field. I think I prefer the greater DoF due to the smaller sensor size. I'm looking forward to how the new system works in a fortnights time at a wedding. With a 60mm macro, 45/1.8 and 12/2, 35-100/2.8, I'll have everything I will possibly need. Except for flashes. I need to hunt some on-camera Oly flashes down. PS - pairing my existing Phottix Strato II Canon trigger/receivers with the OMD EM1 has been a perfect. Obviously no TTL. Not sure if the hot shoe on top of the trigger works with a flash. Will have to test that out. But since I've moved back to continuously lighting during reception, I haven't really used too much flash since ... PPS - I'm selling all my canon gear here.