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 Canon S120 and Pentax WG-3 side-by-side from the front, back and top in their relative dimensions. Canon S120 has external dimensions of 100 x 59 x 29 mm (3.94 x 2.32 x 1.14″) and weighs 217 g (0.48 lb / 7.65 oz) (including batteries). Pentax WG-3 has external dimensions of 124 x 64 x 33 mm (4.9 x 2.5 x 1.3″) and weighs 230 g (0.51 lb / 8.11 oz) (including batteries).
Below you can see the front-view size comparison of the Canon S120 and the Pentax WG-3. Canon S120 is clearly the smaller of the two cameras. Its body is 24mm narrower, 5mm shorter and 4mm thinner than Pentax WG-3.
Here is the back view size comparison of the Canon S120 and Pentax WG-3.
Now lets look at the top view comparison of Canon S120 and Pentax WG-3.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon S120 is 13g lighter than the Pentax WG-3 but we don't think this will make a significant difference.
Weather Sealing
Thanks to the weather-sealed body of the WG-3, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the S120.
LCD Screen Size and Features
Canon S120 and Pentax WG-3's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.