Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the FujiFilm S2500HD and Nikon 1 J1 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). Nikon 1 J1 has external dimensions of 106 x 61 x 30 mm (4.17 x 2.4 x 1.18″) and weighs 234 g (0.52 lb / 8.25 oz) (including batteries).
Below you can see the front-view size comparison of the FujiFilm S2500HD and the Nikon 1 J1. Nikon 1 J1 is clearly the smaller of the two cameras. Its body is 4mm narrower, 12mm shorter and 51mm thinner than FujiFilm S2500HD. As you can tell, actually this is not a fair size comparison since FujiFilm S2500HD has a built-in lens but Nikon 1 J1 doesn't. Once you put a lens on 1 J1, its thickness will increase significantly.
Now lets look at the top view comparison of FujiFilm S2500HD and Nikon 1 J1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon 1 J1 is significantly lighter (103g ) than the FujiFilm S2500HD 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 1 J1, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the FujiFilm FinePix S2500HD (FinePix S2600HD) nor Nikon 1 J1 provides any type of weather sealing in their bodies, 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 S2500HD and Nikon 1 J1's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.