Sony NEX-3 weighs 297 g (0.65 lb / 10.48 oz) and has external dimensions of 117 x 62 x 33 mm (4.61 x 2.44 x 1.3″). Considering that the average weight of Mirrorless type cameras is 440g, Sony NEX-3 is a remarkably light camera for its class. Even better, with a thickness of only 33mm, it is also quite small, 17mm thinner than the average of its class.
Here is the front and top view image of Sony NEX-3 with the dimensions:
In order to give you a better idea about the real life size of Sony NEX-3, 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 Sony NEX-3 with its main competitors:
Sony NEX-3 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 Mirrorless Cameras with Weather Sealing page.