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 Olympus TG-810 and Panasonic GX7 side-by-side from the front, back and top in their relative dimensions. Olympus TG-810 has external dimensions of 100 x 65 x 26 mm (3.94 x 2.56 x 1.02″) and weighs 215 g (0.47 lb / 7.58 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 Olympus TG-810 and the Panasonic GX7. Olympus TG-810 is clearly the smaller of the two cameras. Its body is 23mm narrower, 6mm shorter and 29mm thinner than Panasonic GX7. As you can tell, actually this is not a fair size comparison since Olympus TG-810 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 Olympus TG-810 and Panasonic GX7.
Now lets look at the top view comparison of Olympus TG-810 and Panasonic GX7.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus TG-810 is significantly lighter (187g ) 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
Thanks to the weather-sealed body of the TG-810, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the GX7.
LCD Screen Size and Features
Olympus TG-810 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 Olympus TG-810 has a fixed type screen which provides less flexibility in shooting positions compared to GX7.