Nikon has never been a contender in video. Canon has but it's ceding a lot of ground to Panasonic (GH4/GH5) and Sony (A7S) in 4K video as it doesn't want to can

Nikon has never been a contender in video. Canon has but it's ceding a lot of ground to Panasonic (GH4/GH5) and Sony (A7S) in 4K video as it doesn't want to cannibalize sales of its much more expensive video cameras.