TeamSpeed wrote in post #19119457
YongNuo 605s are perfect. Not only that, they have emulation modes for the 602/603 modes too, which means you can actually set up a 2nd camera and have it trigger when you take a shot with the other camera, which is nice when you want a very fluid dynamic view with one camera and a set perspective with another fired at the same time. Also flash triggers as well...These are the most versatile of all the RF remotes I have tried with the 7D2.
I disagree with Tom's idea, only if you want immediate firing when you hit a button. WIFI and BT transmissions are flaky at best and laggy. I have run through IR, wifi, and RF remotes, and RF remotes are the most reliable and fast reacting.
However I agree with Tom, if you want to use a remote app to see what the 7D2 sees. That is indeed an option, and I have used that. However you need to buy a special wifi SD card from Canon to make that work, as Tom points out and he has the correct card linked. However when I used that for sports, by time I hit the phone shutter button, and the camera fired (within feet of me), the action was over. Going to the YN was much better and almost instant, and I gained the benefit of placing the camera up behind the backboard and having it fire when I fired my 5D4 which was awesome.