Sony A33 weighs 500 g (1.10 lb / 17.64 oz) and has external dimensions of 124 x 92 x 85 mm (4.88 x 3.62 x 3.35″). Considering that the average weight of DSLR type cameras is 774g, Sony A33 is a remarkably light camera for its class. With a thickness of 85mm, it has an average thickness for its class.
Here is the front and top view image of Sony A33 with the dimensions:
In order to give you a better idea about the real life size of Sony A33, 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 Sony A33 with its main competitors:
Sony A33 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.