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 L810 and Olympus E-PL5 side-by-side from the front, back and top in their relative dimensions. Nikon L810 has external dimensions of 111 x 76 x 83 mm (4.37 x 2.99 x 3.27″) and weighs 430 g (0.95 lb / 15.17 oz) (including batteries). Olympus E-PL5 has external dimensions of 111 x 64 x 38 mm (4.37 x 2.52 x 1.5″) and weighs 325 g (0.72 lb / 11.46 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon L810 and the Olympus E-PL5. As you can tell, actually this is not a fair size comparison since Nikon L810 has a built-in lens but Olympus E-PL5 doesn't. Once you put a lens on E-PL5, its thickness will increase significantly.
Here is the back view size comparison of the Nikon L810 and Olympus E-PL5.
Now lets look at the top view comparison of Nikon L810 and Olympus E-PL5.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus E-PL5 is significantly lighter (105g ) than the Nikon L810 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-PL5, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Nikon Coolpix L810 nor Olympus PEN E-PL5 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 Compact Cameras with Weather Sealing Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Nikon L810 and Olympus E-PL5's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Olympus E-PL5 features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels whereas the Nikon L810 has a fixed type screen which provides less flexibility in shooting positions compared to E-PL5.