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 Olympus TG-3 and Casio EX-Z550 side-by-side from the front, back and top in their relative dimensions. Olympus TG-3 has external dimensions of 112 x 66 x 31 mm (4.41 x 2.6 x 1.22″) and weighs 247 g (0.54 lb / 8.71 oz) (including batteries). Casio EX-Z550 has external dimensions of 99 x 53 x 20 mm (3.9 x 2.09 x 0.79″) and weighs 143 g (0.32 lb / 5.04 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus TG-3 and the Casio EX-Z550. Casio EX-Z550 is clearly the smaller of the two cameras. Its body is 13mm narrower, 13mm shorter and 11mm thinner than Olympus TG-3.
Here is the back view size comparison of the Olympus TG-3 and Casio EX-Z550.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-Z550 is significantly lighter (104g ) than the Olympus TG-3 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the TG-3, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the EX-Z550.
LCD Screen Size and Features
Olympus TG-3's 3.00" LCD screen is slightly larger than Casio EX-Z550's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.