Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Canon G12 and Nikon P500 side-by-side from the front, back and top in their relative dimensions. Canon G12 has external dimensions of 112 x 76 x 48 mm (4.41 x 2.99 x 1.89″) and weighs 401 g (0.88 lb / 14.14 oz) (including batteries). Nikon P500 has external dimensions of 116 x 84 x 10 mm (4.57 x 3.31 x 4.06″) and weighs 494 g (1.09 lb / 17.43 oz) (including batteries).
Below you can see the front view size comparison of Canon G12 and Nikon P500. Canon G12 is clearly the smaller of the two cameras. Its body is 4mm narrower, 8mm shorter and 55mm thinner than Nikon P500.
Here is the back view size comparison of Canon G12 and Nikon P500.
Now lets look at the top view comparison of Canon G12 and Nikon P500.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon G12 is significantly lighter (93g ) than the Nikon P500 which may become a big advantage especially on long walking trips.
Unfortunately neither Canon PowerShot G12 nor Nikon Coolpix P500 provides any type of weather sealing in their body, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Nikon P500's 3" LCD screen is slightly larger than Canon G12's 2.8" screen.