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-M1 III and Olympus E-M1X side-by-side from the front, back and top in their relative dimensions. Olympus E-M1 III has external dimensions of 134 x 91 x 69 mm (5.28 x 3.58 x 2.72″) and weighs 580 g (1.28 lb / 20.46 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 the Olympus E-M1 III and the Olympus E-M1X. Olympus E-M1 III is clearly the smaller of the two cameras. Its body is 10mm narrower, 56mm shorter and 6mm thinner than Olympus E-M1X.
Here is the back view size comparison of the Olympus E-M1 III and Olympus E-M1X.
Now lets look at the top view comparison of Olympus E-M1 III 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-M1 III is significantly lighter (417g ) than the Olympus E-M1X 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 Olympus E-M1 III and Olympus E-M1X have the same Micro Four Thirds lens mount and Four Thirds sized sensors, lenses will not be a differentiator on total size of the system.
Weather Sealing
Both the E-M1 III and the E-M1X have weather sealings in their bodies, making them resistant to water and dust.
LCD Screen Size and Features
Olympus E-M1 III and Olympus E-M1X's LCD screens have the same diagonal size of 3.00 inches.
Both cameras feature
Fully Articulating screens where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. Fully articulating screens are also useful for taking Selfies and video.