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 Olympus PEN-F and Leica CL 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). Leica CL has external dimensions of 131 x 78 x 45 mm (5.16 x 3.07 x 1.77″) and weighs 403 g (0.89 lb / 14.22 oz) (including batteries).
Below you can see the front view size comparison of Olympus PEN-F and Leica CL. Olympus PEN-F is clearly the smaller of the two cameras. Its body is 6mm narrower, 6mm shorter and 8mm thinner than Leica CL.
Here is the back view size comparison of Olympus PEN-F and Leica CL.
Now lets look at the top view comparison of Olympus PEN-F and Leica CL.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Leica CL is 24g lighter than the Olympus PEN-F 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 have to also take into account the lenses that you will be using with these bodies. Since Leica CL has an APS-C sized 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 Leica CL lenses.
Unfortunately neither Olympus PEN-F nor Leica CL provides any type of weather sealing in their body, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Olympus PEN-F and Leica CL's LCD screens has the same diagonal size of 3.00".
On the other hand, Olympus PEN-F sports a Fully Articulated screen
which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over the head levels, and especially very useful for shooting selfies and video. Leica CL's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to PEN-F.