dilbert said:
Indeed, Sony's mirrorless cameras are much more of a threat because if Sony can get its AF working well with adapters plus Canon/Nikon glass then buying same-brand bodies is no longer a requirement or expected outcome for those two companies.
If the D5 can do 60fps 4K video, then for sports, do you set your camera to shoot 4K video at 1/500 and get 60fps of 8MP stills whilst "shooting"? Or do you continue to do 15fps at 20MP? With those big lenses, you don't need to crop and what's your target media? Never bigger than an A4 print, so 8MP will be perfectly fine.
No, sorry. I am not sure you have any idea how much support CPS (or the Nikon equivalent) offers photographers, especially those doing sports. Sony only launched its pro support recently, but my CPS contact knows me for a long, long time and she has helped me a lot in the past. Then there are the other benefits, such as exclusive promotions etc.
Sony is a long, long, long way away from getting that part of my business. Frankly, I doubt it ever will, but who knows.
At a lot of events you have to sign contracts, and there is a lot of issues about shooting video. Even if you are going to use that video to take stills from you could be risking your accreditation and future. I would never shoot video to take stills from at a sporting event. I do not think that is the intended purpose ok Nikon shooting 4K video.
The 1D X battery lasts most of the day shooting stills at a sporting event, how many batteries would you need to shoot almost an entire day of 4K video so you can take stills from it, while breaking your accreditation agreement? No chance.
For me, Sony is doing some very interesting things with phones (Xperia Z5 Premium) and the RX100 line. The A7R II is also very interesting from a video perspective but not sport photography.