Nikon D4 2.7x video crop mode implementation
It is nice that in D4 you can get 2.7x crop and still able to shoot 1080p video.
But they way they implement it is not right. Base on the video posted on youtube, I believe in D4, you need to change crop mode manually. That's not convenient.
The proper way is when you stick a 70-200mm on it, you want to be able to zoom from 70mm to 540mm without having going through all the the menu to change the crop modes. It should be automatic.
I know some mirror-less cameras like Olympus E-PL3 already have this feature.