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 III and Olympus E-M1 side-by-side from the front, back and top in their relative dimensions. Olympus E-M10 III has external dimensions of 122 x 84 x 50 mm (4.8 x 3.31 x 1.97″) and weighs 410 g (0.90 lb / 14.46 oz) (including batteries). Olympus E-M1 has external dimensions of 130 x 94 x 63 mm (5.13 x 3.68 x 2.48″) and weighs 497 g (1.10 lb / 17.53 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus E-M10 III and the Olympus E-M1. Olympus E-M10 III is clearly the smaller of the two cameras. Its body is 8mm narrower, 10mm shorter and 13mm thinner than Olympus E-M1.
Here is the back view size comparison of the Olympus E-M10 III and Olympus E-M1.
Now lets look at the top view comparison of Olympus E-M10 III and Olympus E-M1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus E-M10 III is significantly lighter (87g ) than the Olympus E-M1 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-M10 III and Olympus E-M1 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
Thanks to the weather-sealed body of the E-M1, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the E-M10 III.
LCD Screen Size and Features
Olympus E-M10 III and Olympus E-M1's LCD screens have the same diagonal size of 3.00 inches.
Both cameras feature
Tilting screens where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels.