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 Leica C-Lux and Panasonic GH2 side-by-side from the front, back and top in their relative dimensions. Leica C-Lux has external dimensions of 113 x 67 x 46 mm (4.45 x 2.64 x 1.81″) and weighs 340 g (0.75 lb / 11.99 oz) (including batteries). Panasonic GH2 has external dimensions of 124 x 90 x 76 mm (4.88 x 3.54 x 2.99″) and weighs 442 g (0.97 lb / 15.59 oz) (including batteries).
Below you can see the front-view size comparison of the Leica C-Lux and the Panasonic GH2. Leica C-Lux is clearly the smaller of the two cameras. Its body is 11mm narrower, 23mm shorter and 30mm thinner than Panasonic GH2. As you can tell, actually this is not a fair size comparison since Leica C-Lux has a built-in lens but Panasonic GH2 doesn't. Once you put a lens on GH2, its thickness will increase significantly.
Now lets look at the top view comparison of Leica C-Lux and Panasonic GH2.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Leica C-Lux is significantly lighter (102g ) than the Panasonic GH2 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 GH2, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Leica C-Lux nor Panasonic Lumix DMC-GH2 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 Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Leica C-Lux and Panasonic GH2's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Panasonic GH2 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 C-Lux's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to GH2.