LCD and Viewfinder
Nikon D800 has a Fixed Type 3.2″ LCD screen with a resolution of 921k dots. The Nikon D800's 3.2″ screen is larger than average and its resolution is up to the class standarts.
D800 has a built-in Optical (pentaprism) viewfinder. The viewfinder has a coverage of 100% and a magnification ratio of 0.7x. 100% coverage ensures that what you see in the viewfinder while shooting matches exactly what you will get later in your image, helping accurate framing your shots and minimizes the need for cropping images later.
Max Shutter speed
Nikon D800 can shoot continuously at max speed of 4 fps and has max shutter speed of 1/8000 sec.
Flash
D800 has a built-in flash, and it also has a flash shoe to mount your external flashes too.
Focusing
Nikon D800 features a Phase Detection autofocusing system. The AF system has 51 focus points and 15 of these sensors are of Cross-type. Cross-type sensors locks focus faster and more accurate compared to single type sensors.
Nikon D800 also features
Face detection AF where it intelligently detects the faces in the frame and locks the focus automatically.
Video Features
With Nikon D800, you can record your videos at a highest resolution of 1920 x 1080 at 30,25,24 fps and save in MPEG-4 and H.264 formats. Full HD resolution of Nikon D800 will be adequate in most of the situations. But if you are after the highest resolution videos available, see our list of Top Cameras with 4K (Ultra-HD) Video.
D800 has a built-in Mono microphone and a Mono speaker. Nikon D800 also has a port for an external microphone and a headphone port for connecting external headphones which make Nikon D800 a very suitable camera high quality videography.
Connectivity and Storage
You can connect D800 to compatible devices via its HDMI port or USB 3.0 (5 GBit/sec) port.
Battery Nikon D800 is powered by battery which provides a shooting life of 900 according to CIPA standards.
Considering that the average battery life of DSLR type cameras is 883 shots, its battery life is about average in its class but it would still be wise to invest in some spare batteries for long photo trips.
Battery Life Comparison in Semi-Pro DSLR Cameras
Nikon D850 with its 1840shots is the model with longest battery life among Semi-Pro DSLR cameras. Check the comparison of Nikon D800 vs Nikon D850 or take a look at Longest Battery Life DSLR cameras list.
Nikon D800 Features Compared to Main Competitors
User Manual
You can download Nikon D800's User Manual here