Canon SX20 IS weighs 600 g (1.32 lb / 21.16 oz)
and has external dimensions of 128 x 88 x 87 mm (5.04 x 3.46 x 3.43″)
. Considering that the average weight of DSLR-Like type cameras is 591g, its weight is about average in its class. On the other hand, with a thickness of only 87mm, it is quite small, 16mm thinner than the average of its class.
In order to give you a better idea about the real life size of Canon SX20 IS, we have added an image of how it looks next to a credit card and an AA type battery.
Now let's compare Canon SX20 IS size with the camera that it replaced: Canon SX10 IS. As depicted on the comparison image, and have the exact same height, width and thickness.
Below you can find the comparison of the weight and thickness of Canon SX20 IS with its main competitors:
Canon SX20 IS 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 Bridge Cameras with Weather Sealing page.