Cinematography - New Nikon D810 DSLR Adds 1080P 60FPS & Other Video Features, But Not 4K specs: 36.3MP FX-Format CMOS Sensor No Optical Low Pass Filter 3.2″ 1,229k-Dot LCD 1920 x 1080:
Nikon D610 vs D810 (and D750): Which Full Frame Camera should you Buy? (in 4k) - YouTube
Benchmark Performance: Nikon D810 review: Digital Photography Review