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 X20 and Panasonic GX7 side-by-side from the front, back and top in their relative dimensions. Fujifilm X20 has external dimensions of 117 x 70 x 57 mm (4.61 x 2.76 x 2.24″) and weighs 353 g (0.78 lb / 12.45 oz) (including batteries). Panasonic GX7 has external dimensions of 123 x 71 x 55 mm (4.83 x 2.78 x 2.15″) and weighs 402 g (0.89 lb / 14.18 oz) (including batteries).
Below you can see the front-view size comparison of the Fujifilm X20 and the Panasonic GX7. Fujifilm X20 is 6mm narrower and 1mm shorter than Panasonic GX7 but it is also 2mm thicker. As you can tell, actually this is not a fair size comparison since Fujifilm X20 has a built-in lens but Panasonic GX7 doesn't. Once you put a lens on GX7, its thickness will increase significantly.
Here is the back view size comparison of the Fujifilm X20 and Panasonic GX7.
Now lets look at the top view comparison of Fujifilm X20 and Panasonic GX7.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Fujifilm X20 is 49g lighter than the Panasonic GX7 but we don't think this will make a significant difference.
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 GX7, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Fujifilm X20 nor Panasonic Lumix DMC-GX7 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
Panasonic GX7's 3.00" LCD screen is slightly larger than Fujifilm X20's 2.8 screen.
In addition to the size advantage, Panasonic GX7 LCD screen also has a
Tilting feature where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. On the other hand, Fujifilm X20 has a fixed type screen which provides less flexibility in shooting positions compared to GX7.