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 Fujifilm X100S and Leica X2 side-by-side from the front, back and top in their relative dimensions. Fujifilm X100S has external dimensions of 127 x 74 x 54 mm (5 x 2.91 x 2.13″) and weighs 445 g (0.98 lb / 15.70 oz) (including batteries). Leica X2 has external dimensions of 124 x 69 x 52 mm (4.88 x 2.72 x 2.05″) and weighs 345 g (0.76 lb / 12.17 oz) (including batteries).
Below you can see the front-view size comparison of the Fujifilm X100S and the Leica X2. Leica X2 is clearly the smaller of the two cameras. Its body is 3mm narrower, 5mm shorter and 2mm thinner than Fujifilm X100S.
Here is the back view size comparison of the Fujifilm X100S and Leica X2.
Now lets look at the top view comparison of Fujifilm X100S and Leica X2.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Leica X2 is significantly lighter (100g ) than the Fujifilm X100S which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Fujifilm X100S nor Leica X2 provides any type of weather sealing in their bodies, 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Fujifilm X100S's 2.80" LCD screen is slightly larger than Leica X2's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.