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 M3 and Samsung Galaxy NX side-by-side from the front, back and top in their relative dimensions. Canon M3 has external dimensions of 111 x 68 x 44 mm (4.37 x 2.68 x 1.73″) and weighs 366 g (0.81 lb / 12.91 oz) (including batteries). Samsung Galaxy NX has external dimensions of 137 x 101 x 26 mm (5.39 x 3.98 x 1.02″) and weighs 495 g (1.09 lb / 17.46 oz) (including batteries).
Below you can see the front-view size comparison of the Canon M3 and the Samsung Galaxy NX. Canon M3 is 26mm narrower and 33mm shorter than Samsung Galaxy NX but it is also 18mm thicker.
Here is the back view size comparison of the Canon M3 and Samsung Galaxy NX.
Now lets look at the top view comparison of Canon M3 and Samsung Galaxy NX.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon M3 is significantly lighter (129g ) than the Samsung Galaxy NX 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. Since both Canon M3 and Samsung Galaxy NX have the same APS-C sized sensor, their lenses for a similar focal length and aperture will be similar in size and weight.
Weather Sealing
Unfortunately neither the Canon EOS M3 nor Samsung Galaxy NX 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
Samsung Galaxy NX's 4.80" LCD screen is slightly larger than Canon M3's 3" screen.
On the other hand, Canon M3 LCD screen has a
Tilting feature where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. On the other hand, Samsung Galaxy NX has a fixed type screen which provides less flexibility in shooting positions compared to M3.