Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Canon R3 and Olympus E-M1X side-by-side from the front, back and top in their relative dimensions. Canon R3 has external dimensions of 150 x 143 x 87 mm (5.91 x 5.63 x 3.43″) and weighs 1015 g (2.24 lb / 35.80 oz) (including batteries). Olympus E-M1X has external dimensions of 144 x 147 x 75 mm (5.67 x 5.79 x 2.95″) and weighs 997 g (2.20 lb / 35.17 oz) (including batteries).
Below you can see the front view size comparison of Canon R3 and Olympus E-M1X. Olympus E-M1X is 6mm narrower and 12mm thinner than Canon R3 but it is also 4mm taller.
Here is the back view size comparison of Canon R3 and Olympus E-M1X.
Now lets look at the top view comparison of Canon R3 and Olympus E-M1X.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus E-M1X is 18g lighter than the Canon R3 but we don't think this will make a significant difference.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Canon R3 has a Full frame sensor and Olympus E-M1X has a smaller Four Thirds sensor, Olympus E-M1X's lenses for a similar focal length and aperture will generally be lighter and smaller than the Canon R3 lenses.
Both R3 and E-M1X have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Canon R3's 3.2″ LCD screen is slightly larger than Olympus E-M1X's 3" screen.