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 RX100 II and Nikon Z50 side-by-side from the front, back and top in their relative dimensions. Sony RX100 II has external dimensions of 102 x 58 x 38 mm (4 x 2.29 x 1.51″) and weighs 281 g (0.62 lb / 9.91 oz) (including batteries). 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).
Below you can see the front-view size comparison of the Sony RX100 II and the Nikon Z50. Sony RX100 II is clearly the smaller of the two cameras. Its body is 25mm narrower, 36mm shorter and 22mm thinner than Nikon Z50. As you can tell, actually this is not a fair size comparison since Sony RX100 II has a built-in lens but Nikon Z50 doesn't. Once you put a lens on Z50, its thickness will increase significantly.
Here is the back view size comparison of the Sony RX100 II and Nikon Z50.
Now lets look at the top view comparison of Sony RX100 II and Nikon Z50.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony RX100 II is significantly lighter (116g ) than the Nikon Z50 which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on Z50, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the Z50, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the RX100 II.
LCD Screen Size and Features
Nikon Z50's 3.20" LCD screen is slightly larger than Sony RX100 II's 3 screen.