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 FujiFilm S2800HD and Panasonic GH2 side-by-side from the front, back and top in their relative dimensions. FujiFilm S2800HD has external dimensions of 110 x 74 x 82 mm (4.33 x 2.91 x 3.23″) and weighs 437 g (0.96 lb / 15.41 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 FujiFilm S2800HD and Panasonic GH2. FujiFilm S2800HD is 14mm narrower and 16mm shorter than Panasonic GH2 but it is also 6mm thicker. As you can tell, actually this is not a fair size comparison since FujiFilm S2800HD has a built-in lens but Panasonic GH2 doesn't. Once you put a lens on GH2, its thickness will increase significantly.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
FujiFilm S2800HD is 5g lighter than the Panasonic GH2 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 GH2, the total kit will weigh much higher.
Unfortunately neither FujiFilm FinePix S2800HD (FinePix S2900HD) nor Panasonic Lumix DMC-GH2 provides any type of weather sealing in their body, 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 Bridge Cameras with Weather Sealing Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
FujiFilm S2800HD and Panasonic GH2's LCD screens has the same diagonal size of 3".
On the other hand, 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. FujiFilm S2800HD's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to GH2.