Canon 1D MIII weighs 1335 g (2.94 lb / 47.09 oz) and has external dimensions of 156 x 157 x 80 mm (6.14 x 6.18 x 3.15″). Considering that the average weight of DSLR type cameras is 773g, Canon 1D MIII is a significantly heavy camera for its class. With a thickness of 80mm, it has an average thickness.
Here is the front and top view image of Canon 1D MIII with the dimensions:
In order to give you a better idea about the real life size of Canon 1D MIII, we have added an image of how it looks next to a credit card and an AA type battery.
Now let's compare Canon 1D MIII size with the camera that it replaced: Canon 1D MII N.
Below you can find the comparison of the weight and thickness of Canon 1D MIII with its main competitors:
Canon 1D MIII has environmental sealings on its body which makes it a weather resistant camera, providing resistance against the water and dust getting in to the camera. If you like outdoors photography and want to be able to use your camera in extreme conditions, Canon 1D MIII will serve you well. If you attach one of these Canon 1D MIII weather Sealed lenses to your camera, you will have a great all weather kit.