Nikon D800 weighs 900 g (1.98 lb / 31.75 oz) and has external dimensions of 146 x 123 x 82 mm (5.75 x 4.84 x 3.23″). Considering that the average weight of DSLR type cameras is 774g, its weight is about average in its class. With a thickness of 82mm, it also has an average thickness.
Here is the front and top view image of Nikon D800 with the dimensions:
In order to give you a better idea about the real life size of Nikon D800, we have added an image of how it looks next to a credit card and an AA type battery.
Now lets compare the weight and thickness of Nikon D800 with its main competitors:
Nikon D800 has environmental sealings on its body which makes it a weather resistant camera, providing resistance against the water and dust getting in to the camera. If you like outdoors photography and want to be able to use your camera in extreme conditions, Nikon D800 will serve you well. If you attach one of these Nikon D800 weather Sealed lenses to your camera, you will have a great all weather kit.