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 S2500HD and Canon A800 side-by-side from the front, back and top in their relative dimensions. FujiFilm S2500HD has external dimensions of 110 x 73 x 81 mm (4.33 x 2.89 x 3.19″) and weighs 337 g (0.74 lb / 11.89 oz) (including batteries). Canon A800 has external dimensions of 94 x 61 x 31 mm (3.7 x 2.4 x 1.22″) and weighs 186 g (0.41 lb / 6.56 oz) (including batteries).
Below you can see the front view size comparison of FujiFilm S2500HD and Canon A800. Canon A800 is clearly the smaller of the two cameras. Its body is 16mm narrower, 12mm shorter and 50mm thinner than FujiFilm S2500HD.
Now lets look at the top view comparison of FujiFilm S2500HD and Canon A800.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon A800 is significantly lighter (151g ) than the FujiFilm S2500HD which may become a big advantage especially on long walking trips.
Unfortunately neither FujiFilm FinePix S2500HD (FinePix S2600HD) nor Canon PowerShot A800 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
FujiFilm S2500HD's 3 LCD screen is slightly larger than Canon A800's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.