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 Sony A6400 and Olympus E-M5 III side-by-side from the front, back and top in their relative dimensions. Sony A6400 has external dimensions of 120 x 67 x 60 mm (4.72 x 2.64 x 2.36″) and weighs 403 g (0.89 lb / 14.22 oz) (including batteries). Olympus E-M5 III has external dimensions of 125 x 85 x 50 mm (4.92 x 3.35 x 1.97″) and weighs 414 g (0.91 lb / 14.60 oz) (including batteries).
Below you can see the front-view size comparison of the Sony A6400 and the Olympus E-M5 III. Sony A6400 is 5mm narrower and 18mm shorter than Olympus E-M5 III but it is also 10mm thicker.
Here is the back view size comparison of the Sony A6400 and Olympus E-M5 III.
Now lets look at the top view comparison of Sony A6400 and Olympus E-M5 III.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony A6400 is 11g lighter than the Olympus E-M5 III 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 also have to take into account the lenses that you will be using with these bodies. Since Sony A6400 has an APS-C sized sensor and Olympus E-M5 III has a smaller Four Thirds sensor, Olympus E-M5 III's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A6400 lenses.
Weather Sealing
Both the A6400 and the E-M5 Mark III have weather sealings in their bodies, making them resistant to water and dust.
LCD Screen Size and Features
Sony A6400 and Olympus E-M5 III's LCD screens have the same diagonal size of 3.00 inches.
Sony A6400 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-M5 III sports a
Fully Articulated screen which is more flexible and useful, especially for taking selfies and video.