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 Panasonic FZ2500 and Nikon P520 side-by-side from the front, back and top in their relative dimensions. Panasonic FZ2500 has external dimensions of 138 x 102 x 135 mm (5.42 x 4.01 x 5.3″) and weighs 915 g (2.02 lb / 32.28 oz) (including batteries). Nikon P520 has external dimensions of 125 x 84 x 102 mm (4.92 x 3.31 x 4.02″) and weighs 550 g (1.21 lb / 19.40 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic FZ2500 and the Nikon P520. Nikon P520 is clearly the smaller of the two cameras. Its body is 13mm narrower, 18mm shorter and 33mm thinner than Panasonic FZ2500.
Here is the back view size comparison of the Panasonic FZ2500 and Nikon P520.
Now lets look at the top view comparison of Panasonic FZ2500 and Nikon P520.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon P520 is significantly lighter (365g ) than the Panasonic FZ2500 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-FZ2500 (Lumix DMC-FZ2000) nor Nikon Coolpix P520 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
LCD Screen Size and Features
Nikon P520's 3.20" LCD screen is slightly larger than Panasonic FZ2500's 3 screen.