Nikon D100 weighs 780 g (1.72 lb / 27.51 oz)
and has external dimensions of 144 x 116 x 81 mm (5.67 x 4.57 x 3.19″)
. Considering that the average weight of DSLR type cameras is 773g, its weight is about average in its class. With a thickness of 81mm, it also has an average thickness.
Here is the front and top view image of Nikon D100 with the dimensions:
In order to give you a better idea about the real life size of Nikon D100, we have added an image of how it looks next to a credit card and an AA type battery.
Below you can find the comparison of the weight and thickness of Nikon D100 with its main competitors:
Nikon D100 Size Compared to Main Competitors
Nikon D100 doesn't have any environmental sealings on its body so you got to be extra careful to protect it against water and dust. If you shoot under these conditions very often, consider checking Top DSLR Cameras with Weather Sealing page.