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 Sony S2100 and Olympus XZ-10 side-by-side from the front, back and top in their relative dimensions. Sony S2100 has external dimensions of 98 x 61 x 27 mm (3.86 x 2.4 x 1.06″) and weighs 167 g (0.37 lb / 5.89 oz) (including batteries). Olympus XZ-10 has external dimensions of 102 x 61 x 34 mm (4.03 x 2.41 x 1.35″) and weighs 221 g (0.49 lb / 7.80 oz) (including batteries).
Below you can see the front view size comparison of Sony S2100 and Olympus XZ-10. Sony S2100 is 4mm narrower and 7mm thinner than Sony S2100 but they have the same height of 61mm.
Here is the back view size comparison of Sony S2100 and Olympus XZ-10.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony S2100 is significantly lighter (54g ) than the Olympus XZ-10 which may become a big advantage especially on long walking trips.
Unfortunately neither Sony Cyber-shot DSC-S2100 nor Olympus Stylus XZ-10 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
Sony S2100 and Olympus XZ-10'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.