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 Nikon Z50 and Sony A7 III side-by-side from the front, back and top in their relative dimensions. Nikon Z50 has external dimensions of 127 x 94 x 60 mm (5 x 3.7 x 2.36″) and weighs 397 g (0.88 lb / 14.00 oz) (including batteries). Sony A7 III has external dimensions of 127 x 96 x 74 mm (5 x 3.78 x 2.91″) and weighs 650 g (1.43 lb / 22.93 oz) (including batteries).
Below you can see the front view size comparison of Nikon Z50 and Sony A7 III. Nikon Z50 has the same height with Sony A7 III. On the other hand, with a width of 94mm, it is 2 narrower and also with a thickness of 60mm, it is 14mm thinner than Sony A7 III.
Here is the back view size comparison of Nikon Z50 and Sony A7 III.
Now lets look at the top view comparison of Nikon Z50 and Sony A7 III.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon Z50 is significantly lighter (253g ) than the Sony A7 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 Sony A7 III has a Full frame sensor and Nikon Z50 has a smaller APS-C sensor, Nikon Z50's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A7 III lenses.
Both Z50 and A7 III have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Nikon Z50's 3.2" LCD screen is slightly larger than Sony A7 III's 3" screen.
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.