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 Pentax WG-3 and Canon M10 side-by-side from the front, back and top in their relative dimensions. 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). Canon M10 has external dimensions of 108 x 67 x 35 mm (4.25 x 2.64 x 1.38″) and weighs 301 g (0.66 lb / 10.62 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax WG-3 and the Canon M10. Pentax WG-3 is 3mm shorter and 2mm thinner than Canon M10 but it is also 16mm wider. As you can tell, actually this is not a fair size comparison since Pentax WG-3 has a built-in lens but Canon M10 doesn't. Once you put a lens on M10, its thickness will increase significantly.
Here is the back view size comparison of the Pentax WG-3 and Canon M10.
Now lets look at the top view comparison of Pentax WG-3 and Canon M10.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax WG-3 is significantly lighter (71g ) than the Canon M10 which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on M10, the total kit will weigh much higher.
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 M10.
LCD Screen Size and Features
Pentax WG-3 and Canon M10's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Canon M10 features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels whereas the Pentax WG-3 has a fixed type screen which provides less flexibility in shooting positions compared to M10.