Nikon D7100 weighs 765 g (1.69 lb / 26.98 oz) and has external dimensions of 136 x 107 x 76 mm (5.35 x 4.21 x 2.99″). Considering that the average weight of DSLR type cameras is 774g, its weight is about average in its class. With a thickness of 76mm, it also has an average thickness.
Here is the front and top view image of Nikon D7100 with the dimensions:
In order to give you a better idea about the real life size of Nikon D7100, 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 D7100 with its main competitors:
Nikon D7100 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 D7100 will serve you well. If you attach one of these Nikon D7100 weather Sealed lenses to your camera, you will have a great all weather kit.