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 Olympus SZ-30MR and Canon S100 side-by-side from the front, back and top in their relative dimensions. Olympus SZ-30MR has external dimensions of 106 x 69 x 40 mm (4.17 x 2.72 x 1.57″) and weighs 226 g (0.50 lb / 7.97 oz) (including batteries). Canon S100 has external dimensions of 99 x 60 x 28 mm (3.9 x 2.36 x 1.1″) and weighs 198 g (0.44 lb / 6.98 oz) (including batteries).
Below you can see the front view size comparison of Olympus SZ-30MR and Canon S100. Canon S100 is clearly the smaller of the two cameras. Its body is 7mm narrower, 9mm shorter and 12mm thinner than Olympus SZ-30MR.
Now lets look at the top view comparison of Olympus SZ-30MR and Canon S100.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon S100 is 28g lighter than the Olympus SZ-30MR but we don't think this will make a significant difference.
Unfortunately neither Olympus SZ-30MR nor Canon PowerShot S100 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
Olympus SZ-30MR and Canon S100'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.