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 Nikon P500 and Olympus E-M1 side-by-side from the front, back and top in their relative dimensions. Nikon P500 has external dimensions of 116 x 84 x 10 mm (4.57 x 3.31 x 4.06″) and weighs 494 g (1.09 lb / 17.43 oz) (including batteries). Olympus E-M1 has external dimensions of 130 x 94 x 63 mm (5.13 x 3.68 x 2.48″) and weighs 497 g (1.10 lb / 17.53 oz) (including batteries).
Below you can see the front view size comparison of Nikon P500 and Olympus E-M1. Nikon P500 is 14mm narrower and 10mm shorter than Olympus E-M1 but it is also 40mm thicker. As you can tell, actually this is not a fair size comparison since Nikon P500 has a built-in lens but Olympus E-M1 doesn't. Once you put a lens on E-M1, its thickness will increase significantly.
Here is the back view size comparison of Nikon P500 and Olympus E-M1.
Now lets look at the top view comparison of Nikon P500 and Olympus E-M1.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon P500 is 3g lighter than the Olympus E-M1 but we don't think this will make a significant difference.
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-M1, the total kit will weigh much higher.
Thanks to the weather sealed body of E-M1, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to P500.
LCD Screen Size and Features
Nikon P500 and Olympus E-M1's LCD screens has the same diagonal size of 3".
Both cameras feature Tilting screens
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels.