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 S4100 and Casio EX-100 side-by-side from the front, back and top in their relative dimensions. Nikon S4100 has external dimensions of 95 x 57 x 20 mm (3.74 x 2.24 x 0.79″) and weighs (including batteries). Casio EX-100 has external dimensions of 119x67x50 mm and weighs 389 g (including batteries).
Below you can see the front view size comparison of Nikon S4100 and Casio EX-100. Nikon S4100 is clearly the smaller of the two cameras. Its body is 24mm narrower, 10mm shorter and 30mm thinner than Casio EX-100.
Here is the back view size comparison of Nikon S4100 and Casio EX-100.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon S4100 is 389g lighter than the Casio EX-100 but we don't think this will make a significant difference.
Unfortunately neither Nikon Coolpix S4100 nor Casio Exilim EX-100 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
LCD Screen Size and Features
Casio EX-100's 3.5" LCD screen is slightly larger than Nikon S4100's 3" screen.
In addition to the size advantage, Casio EX-100 LCD screen also has a Tilting feature
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. On the other hand, Nikon S4100 has a fixed type screen which provides less flexibility in shooting positions compared to EX-100.