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 Olympus E-M10 IV and Olympus E-M1 III side-by-side from the front, back and top in their relative dimensions. Olympus E-M10 IV has external dimensions of 122 x 84 x 49 mm (4.8 x 3.31 x 1.93″) and weighs 383 g (0.84 lb / 13.51 oz) (including batteries). 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).
Below you can see the front view size comparison of Olympus E-M10 IV and Olympus E-M1 III. Olympus E-M10 IV is clearly the smaller of the two cameras. Its body is 12mm narrower, 7mm shorter and 20mm thinner than Olympus E-M1 III.
Here is the back view size comparison of Olympus E-M10 IV and Olympus E-M1 III.
Now lets look at the top view comparison of Olympus E-M10 IV and Olympus E-M1 III.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus E-M10 IV is significantly lighter (197g ) than the Olympus E-M1 III 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 have to also take into account the lenses that you will be using with these bodies. Since both Olympus E-M10 IV and Olympus E-M1 III 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.
Thanks to the weather sealed body of E-M1 III, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to E-M10 IV.
LCD Screen Size and Features
Olympus E-M10 IV and Olympus E-M1 III's LCD screens has the same diagonal size of 3".
Olympus E-M10 IV features a Tilting only screen
which is mostly only good for shooting from waist or over the head levels. On the other hand, Olympus E-M1 III sports a Fully Articulated screen
which is more flexible and useful especially for taking Selfie shots and video.