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 E-M10 II and Pentax Q-S1 side-by-side from the front, back and top in their relative dimensions. Olympus E-M10 II has external dimensions of 120 x 83 x 47 mm (4.72 x 3.27 x 1.85″) and weighs 390 g (0.86 lb / 13.76 oz) (including batteries). Pentax Q-S1 has external dimensions of 105 x 58 x 34 mm (4.13 x 2.28 x 1.34″) and weighs 203 g (0.45 lb / 7.16 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus E-M10 II and the Pentax Q-S1. Pentax Q-S1 is clearly the smaller of the two cameras. Its body is 15mm narrower, 25mm shorter and 13mm thinner than Olympus E-M10 II.
Here is the back view size comparison of the Olympus E-M10 II and Pentax Q-S1.
Now lets look at the top view comparison of Olympus E-M10 II and Pentax Q-S1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax Q-S1 is significantly lighter (187g ) than the Olympus E-M10 II which may become a big advantage especially on long walking trips.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you also have to take into account the lenses that you will be using with these bodies.
Weather Sealing
Unfortunately neither the Olympus OM-D E-M10 II nor Pentax Q-S1 provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Olympus E-M10 II and Pentax Q-S1's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Olympus E-M10 II 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 Q-S1 has a fixed type screen which provides less flexibility in shooting positions compared to E-M10 II.