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 Casio EX-ZR800 and Panasonic GX7 side-by-side from the front, back and top in their relative dimensions. Casio EX-ZR800 has external dimensions of 108 x 60 x 31 mm (4.25 x 2.36 x 1.22″) and weighs 222 g (0.49 lb / 7.83 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 Casio EX-ZR800 and the Panasonic GX7. Casio EX-ZR800 is clearly the smaller of the two cameras. Its body is 15mm narrower, 11mm shorter and 24mm thinner than Panasonic GX7. As you can tell, actually this is not a fair size comparison since Casio EX-ZR800 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 Casio EX-ZR800 and Panasonic GX7.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-ZR800 is significantly lighter (180g ) than the Panasonic GX7 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 GX7, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Casio Exilim EX-ZR800 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
Casio EX-ZR800 and Panasonic GX7's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Panasonic GX7 features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels whereas the Casio EX-ZR800 has a fixed type screen which provides less flexibility in shooting positions compared to GX7.