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 GH2 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 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 Panasonic TS2 and Panasonic GH2. Panasonic TS2 is clearly the smaller of the two cameras. Its body is 25mm narrower, 27mm shorter and 52mm thinner than Panasonic GH2. As you can tell, actually this is not a fair size comparison since Panasonic TS2 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 Panasonic TS2 and Panasonic GH2.
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 (254g ) 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.
LCD Screen Size and Features
Panasonic GH2's 3" LCD screen is slightly larger than Panasonic TS2's 2.7" screen.
Moreover, 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. On the other hand, Panasonic TS2 has a fixed type screen which provides almost no flexibility in shooting positions compared to GH2.