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 Nikon L31 and Casio EX-100 side-by-side from the front, back and top in their relative dimensions. Nikon L31 has external dimensions of 96 x 59 x 29 mm (3.78 x 2.32 x 1.14″) and weighs 160 g (0.35 lb / 5.64 oz) (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 the Nikon L31 and the Casio EX-100. Nikon L31 is clearly the smaller of the two cameras. Its body is 23mm narrower, 8mm shorter and 21mm thinner than Casio EX-100.
Here is the back view size comparison of the Nikon L31 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 L31 is significantly lighter (229g ) than the Casio EX-100 which may become a big advantage especially on long walking trips.
Unfortunately neither the Nikon Coolpix L31 nor Casio Exilim EX-100 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
Casio EX-100's 3.50" LCD screen is slightly larger than Nikon L31's 2.7" 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 L31 has a fixed type screen which provides less flexibility in shooting positions compared to EX-100.