Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the Canon G16 and Nikon S810c side-by-side from the front, back and top in their relative dimensions. Canon G16 has external dimensions of 109 x 76 x 40 mm (4.29 x 2.99 x 1.57″) and weighs 356 g (0.78 lb / 12.56 oz) (including batteries). Nikon S810c has external dimensions of 113 x 64 x 28 mm (4.45 x 2.52 x 1.1″) and weighs 216 g (0.48 lb / 7.62 oz) (including batteries).
Below you can see the front-view size comparison of the Canon G16 and the Nikon S810c. Nikon S810c is 12mm shorter and 12mm thinner than Canon G16 but it is also 4mm wider.
Here is the back view size comparison of the Canon G16 and Nikon S810c.
Now lets look at the top view comparison of Canon G16 and Nikon S810c.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S810c is significantly lighter (140g ) than the Canon G16 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Canon PowerShot G16 nor Nikon Coolpix S810c provides any type of weather sealing in their bodies, 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
LCD Screen Size and Features
Nikon S810c's 3.70" LCD screen is slightly larger than Canon G16's 3 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.