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 FZ40 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 FZ40 has external dimensions of 120 x 80 x 92 mm (4.72 x 3.15 x 3.62″) and weighs 494 g (1.09 lb / 17.43 oz) (including batteries).
Below you can see the front view size comparison of FujiFilm S2800HD and Panasonic FZ40. FujiFilm S2800HD is clearly the smaller of the two cameras. Its body is 10mm narrower, 6mm shorter and 10mm thinner than Panasonic FZ40.
Here is the back view size comparison of FujiFilm S2800HD and Panasonic FZ40.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
FujiFilm S2800HD is 57g lighter than the Panasonic FZ40 but we don't think this will make a significant difference.
Unfortunately neither FujiFilm FinePix S2800HD (FinePix S2900HD) nor Panasonic Lumix DMC-FZ40 (Lumix DMC-FZ45) 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
LCD Screen Size and Features
FujiFilm S2800HD and Panasonic FZ40's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.