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 Olympus E-M5 II 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). Olympus E-M5 II has external dimensions of 124 x 85 x 45 mm (4.88 x 3.35 x 1.77″) and weighs 469 g (1.03 lb / 16.54 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon P900 and the Olympus E-M5 II. Olympus E-M5 II is clearly the smaller of the two cameras. Its body is 16mm narrower, 18mm shorter and 92mm thinner than Nikon P900. As you can tell, actually this is not a fair size comparison since Nikon P900 has a built-in lens but Olympus E-M5 II doesn't. Once you put a lens on E-M5 Mark II, its thickness will increase significantly.
Here is the back view size comparison of the Nikon P900 and Olympus E-M5 II.
Now lets look at the top view comparison of Nikon P900 and Olympus E-M5 II.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus E-M5 II is significantly lighter (430g ) than the Nikon P900 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 E-M5 Mark II, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the E-M5 Mark II, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the P900.
LCD Screen Size and Features
Nikon P900 and Olympus E-M5 II's LCD screens have the same diagonal size of 3.00 inches.
Both cameras feature
Fully Articulating screens where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. Fully articulating screens are also useful for taking Selfies and video.