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 Olympus PEN-F and Nikon Z5 side-by-side from the front, back and top in their relative dimensions. Olympus PEN-F has external dimensions of 125 x 72 x 37 mm (4.92 x 2.83 x 1.46″) and weighs 427 g (0.94 lb / 15.06 oz) (including batteries). Nikon Z5 has external dimensions of 134 x 101 x 70 mm (5.28 x 3.98 x 2.76″) and weighs 675 g (1.49 lb / 23.81 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus PEN-F and the Nikon Z5. Olympus PEN-F is clearly the smaller of the two cameras. Its body is 9mm narrower, 29mm shorter and 33mm thinner than Nikon Z5.
Here is the back view size comparison of the Olympus PEN-F and Nikon Z5.
Now lets look at the top view comparison of Olympus PEN-F and Nikon Z5.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus PEN-F is significantly lighter (248g ) than the Nikon Z5 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 also have to take into account the lenses that you will be using with these bodies. Since Nikon Z5 has a Full frame sensor and Olympus PEN-F has a smaller Four Thirds sensor, Olympus PEN-F's lenses for a similar focal length and aperture will generally be lighter and smaller than the Nikon Z5 lenses.
Weather Sealing
Thanks to the weather-sealed body of the Z5, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the PEN-F.
LCD Screen Size and Features
Nikon Z5's 3.20" LCD screen is slightly larger than Olympus PEN-F's 3 screen.