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 Samsung Galaxy NX and Sony A7 III side-by-side from the front, back and top in their relative dimensions. Samsung Galaxy NX has external dimensions of 137 x 101 x 26 mm (5.39 x 3.98 x 1.02″) and weighs 495 g (1.09 lb / 17.46 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 Samsung Galaxy NX and Sony A7 III. Sony A7 III is 10mm narrower and 5mm shorter than Samsung Galaxy NX but it is also 48mm thicker.
Here is the back view size comparison of Samsung Galaxy NX and Sony A7 III.
Now lets look at the top view comparison of Samsung Galaxy NX and Sony A7 III.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Samsung Galaxy NX is significantly lighter (155g ) 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 Samsung Galaxy NX has a smaller APS-C sensor, Samsung Galaxy NX's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A7 III lenses.
Thanks to the weather sealed body of A7 III, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to Galaxy NX.
LCD Screen Size and Features
Samsung Galaxy NX's 4.80" LCD screen is slightly larger than Sony A7 III's 3″ screen.