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 Nikon S9100 and Nikon P500 side-by-side from the front, back and top in their relative dimensions. Nikon S9100 has external dimensions of 105 x 62 x 35 mm (4.13 x 2.44 x 1.38″) and weighs 214 g (0.47 lb / 7.55 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 Nikon S9100 and Nikon P500. Nikon S9100 is clearly the smaller of the two cameras. Its body is 11mm narrower, 22mm shorter and 68mm thinner than Nikon P500.
Here is the back view size comparison of Nikon S9100 and Nikon P500.
Now lets look at the top view comparison of Nikon S9100 and Nikon P500.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon S9100 is significantly lighter (280g ) than the Nikon P500 which may become a big advantage especially on long walking trips.
Unfortunately neither Nikon Coolpix S9100 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 S9100 and Nikon P500's LCD screens has the same diagonal size of 3".
On the other hand, Nikon P500 features a Tilting screen
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Nikon S9100 has a fixed type screen which provides less flexibility in shooting positions compared to P500.