Nikon D300 weighs 925 g (2.04 lb / 32.63 oz) and has external dimensions of 147 x 114 x 74 mm (5.79 x 4.49 x 2.91″). Considering that the average weight of DSLR type cameras is 774g, its weight is about average in its class. With a thickness of 74mm, it also has an average thickness.
Here is the front and top view image of Nikon D300 with the dimensions:
In order to give you a better idea about the real life size of Nikon D300, we have added an image of how it looks next to a credit card and an AA type battery.
Now let's compare Nikon D300 size with the camera that it replaced: Nikon D200.
Below you can find the comparison of the weight and thickness of Nikon D300 with its main competitors:
Nikon D300 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, Nikon D300 will serve you well. If you attach one of these Nikon D300 weather Sealed lenses to your camera, you will have a great all weather kit.