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 VH-515 and Pentax WG-3 side-by-side from the front, back and top in their relative dimensions. Olympus VH-515 has external dimensions of 102 x 60 x 21 mm (4.02 x 2.36 x 0.83″) and weighs 152 g (0.34 lb / 5.36 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 Olympus VH-515 and the Pentax WG-3. Olympus VH-515 is clearly the smaller of the two cameras. Its body is 22mm narrower, 4mm shorter and 12mm thinner than Pentax WG-3.
Here is the back view size comparison of the Olympus VH-515 and Pentax WG-3.
Now lets look at the top view comparison of Olympus VH-515 and Pentax WG-3.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus VH-515 is significantly lighter (78g ) than the Pentax WG-3 which may become a big advantage especially on long walking trips.
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 VH-515.
LCD Screen Size and Features
Olympus VH-515 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.