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 Casio EX-ZR400 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). Casio EX-ZR400 has external dimensions of 105 x 59 x 29 mm (4.13 x 2.32 x 1.14″) and weighs 205 g (0.45 lb / 7.23 oz) (including batteries).
Below you can see the front view size comparison of Nikon S9100 and Casio EX-ZR400.
Comparison image of Nikon S9100 and Casio EX-ZR400 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Nikon S9100 and Casio EX-ZR400.
Comparison image of Nikon S9100 and Casio EX-ZR400 Size and Weight - Back View
Now lets look at the top view comparison of Nikon S9100 and Casio EX-ZR400.
Top View Comparison image of Nikon S9100 and Casio EX-ZR400 Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Casio EX-ZR400 is 9g lighter than the Nikon S9100 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither Nikon Coolpix S9100 nor Casio Exilim EX-ZR400 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
Nikon S9100 and Casio EX-ZR400's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.