I own one and I really hate it. I also own Nikon D750, Canon 5d Mark III and a Lumix FZ 1000. The problem with the Sony is that the menu has so many options and when you think you are in Manual, you may still have functions operating in auto. The menu just kills me and the video button is awkward and hard to reach. We bought them to record in video in tight quarters, but SURPRISE it only records for about 20 minutes then turns off. I had high hopes, but it is not a professional camera.
I bought 3 of these when they came out. My intention was to use them for shooting inside of cars on reality shows. I thought I could rig these up and shoot scenes using this camera as I would use a go pro for dialogue scenes. Well I was disappointed, it only records for about 20 minutes before it overheats and shuts down. That may seem like a long time, but I have never worked with a "reality" producer that says cut. So 20 minutes just does not work for my needs. The record button for video is poorly designed. The kit lens is difficult to use and not very good. The menu is more difficult to use than any camera I have put my hands on. When your in manual there are still functions that are operating on auto. I am sure I could get better at it, but overall I am very disappointed. I really wanted to like this camera, but to use it requires a large investment of time to learn the menu and navigate quickly.
This camera sounds good, but the sensor is just a hair bigger than the canon 7D, so all your L series expensive glass now have a crop factor of 1.5 or so. That 16-35mm zoom is no longer wide enough to give you a stunning interior or a nice wide shot in tight quarters. Yes, it has all the nice outputs and inputs you need for professional work, but it suffers from the size of the sensor. Much like the Panasonic 100 with the 4/3" sensor the lenses don't translate as you wish.You will find using Ef-s lenses may help especially for wide shots. The other issue is it is only 1920x1080, where as some of it's competition has a higher capture or records in higher quality.I still prefer the look of the Canon 5 Mark III.