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 Casio EX-Z400 and Nikon S230 side-by-side from the front, back and top in their relative dimensions. Casio EX-Z400 has external dimensions of 95 x 60 x 23 mm (3.74 x 2.36 x 0.91″) and weighs 130 g (0.29 lb / 4.59 oz) (including batteries). Nikon S230 has external dimensions of 91 x 57 x 20 mm (3.58 x 2.24 x 0.79″) and weighs 115 g (0.25 lb / 4.06 oz) (including batteries).
Below you can see the front-view size comparison of the Casio EX-Z400 and the Nikon S230. Nikon S230 is clearly the smaller of the two cameras. Its body is 4mm narrower, 3mm shorter and 3mm thinner than Casio EX-Z400.
Here is the back view size comparison of the Casio EX-Z400 and Nikon S230.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S230 is 15g lighter than the Casio EX-Z400 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Casio Exilim EX-Z400 nor Nikon Coolpix S230 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-Z400 and Nikon S230's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.