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 Nikon P900 and Nikon P520 side-by-side from the front, back and top in their relative dimensions. Nikon P900 has external dimensions of 140 x 103 x 137 mm (5.51 x 4.06 x 5.39″) and weighs 899 g (1.98 lb / 31.71 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 Nikon P900 and the Nikon P520. Nikon P520 is clearly the smaller of the two cameras. Its body is 15mm narrower, 19mm shorter and 35mm thinner than Nikon P900.
Here is the back view size comparison of the Nikon P900 and Nikon P520.
Now lets look at the top view comparison of Nikon P900 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 (349g ) than the Nikon P900 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Nikon Coolpix P900 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 Nikon P900's 3 screen.