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-Z90 and Olympus TG-4 side-by-side from the front, back and top in their relative dimensions. Casio EX-Z90 has external dimensions of 90 x 52 x 19 mm (3.54 x 2.05 x 0.75″) and weighs 121 g (0.27 lb / 4.27 oz) (including batteries). Olympus TG-4 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).
Below you can see the front-view size comparison of the Casio EX-Z90 and the Olympus TG-4. Casio EX-Z90 is clearly the smaller of the two cameras. Its body is 22mm narrower, 14mm shorter and 12mm thinner than Olympus TG-4.
Here is the back view size comparison of the Casio EX-Z90 and Olympus TG-4.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-Z90 is significantly lighter (126g ) than the Olympus TG-4 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the TG-4, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the EX-Z90.
LCD Screen Size and Features
Olympus TG-4's 3.00" LCD screen is slightly larger than Casio EX-Z90's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.