Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Panasonic TS2 and Panasonic GH3 side-by-side from the front, back and top in their relative dimensions. Panasonic TS2 has external dimensions of 99 x 63 x 24 mm (3.9 x 2.48 x 0.94″) and weighs 188 g (0.41 lb / 6.63 oz) (including batteries). Panasonic GH3 has external dimensions of 133 x 93 x 82 mm (5.24 x 3.66 x 3.23″) and weighs 550 g (1.21 lb / 19.40 oz) (including batteries).
Below you can see the front view size comparison of Panasonic TS2 and Panasonic GH3. Panasonic TS2 is clearly the smaller of the two cameras. Its body is 34mm narrower, 30mm shorter and 58mm thinner than Panasonic GH3. As you can tell, actually this is not a fair size comparison since Panasonic TS2 has a built-in lens but Panasonic GH3 doesn't. Once you put a lens on GH3, its thickness will increase significantly.
Here is the back view size comparison of Panasonic TS2 and Panasonic GH3.
Now lets look at the top view comparison of Panasonic TS2 and Panasonic GH3.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic TS2 is significantly lighter (362g ) than the Panasonic GH3 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 GH3, the total kit will weigh much higher.
LCD Screen Size and Features
Panasonic GH3's 3" LCD screen is slightly larger than Panasonic TS2's 2.7" screen.
Moreover, Panasonic GH3 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. On the other hand, Panasonic TS2 has a fixed type screen which provides almost no flexibility in shooting positions compared to GH3.