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 Casio EX-100 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). 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 Olympus SZ-30MR and Casio EX-100. Olympus SZ-30MR is 13mm narrower and 10mm thinner than Casio EX-100 but it is also 2mm taller.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus SZ-30MR is significantly lighter (163g ) than the Casio EX-100 which may become a big advantage especially on long walking trips.
Unfortunately neither Olympus SZ-30MR nor Casio Exilim EX-100 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
Casio EX-100's 3.50" LCD screen is slightly larger than Olympus SZ-30MR's 3" 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, Olympus SZ-30MR has a fixed type screen which provides less flexibility in shooting positions compared to EX-100.