Olympus E-510 weighs 490 g (1.08 lb / 17.28 oz)
and has external dimensions of 136 x 92 x 68 mm (5.35 x 3.62 x 2.68″)
. Considering that the average weight of DSLR type cameras is 773g, Olympus E-510 is a remarkably light camera for its class. With a thickness of 68mm, it has an average thickness for its class.
In order to give you a better idea about the real life size of Olympus E-510, we have added an image of how it looks next to a credit card and an AA type battery.
Now let's compare Olympus E-510 size with the camera that it replaced: Olympus E-500. Olympus E-500 is 6mm narrower and 2mm thinner than Olympus E-510 but it is also 3mm taller.
Below you can find the comparison of the weight and thickness of Olympus E-510 with its main competitors:
Olympus E-510 Size Compared to Main Competitors
Olympus E-510 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.