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 L810 and Nikon L820 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). Nikon L820 has external dimensions of 111 x 76 x 85 mm (4.37 x 2.99 x 3.35″) and weighs 470 g (1.04 lb / 16.58 oz) (including batteries).
Below you can see the front view size comparison of Nikon L810 and Nikon L820. Nikon L810 has the same height and width with Nikon L820. On the other hand, with a thickness of 83mm, it is 2mm thinner.
Here is the back view size comparison of Nikon L810 and Nikon L820.
Now lets look at the top view comparison of Nikon L810 and Nikon L820.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon L810 is 40g lighter than the Nikon L820 but we don't think this will make a significant difference.
Unfortunately neither Nikon Coolpix L810 nor Nikon Coolpix L820 provides any type of weather sealing in their body, 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 Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Nikon L810 and Nikon L820's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.