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 L830 and Nikon L820 side-by-side from the front, back and top in their relative dimensions. Nikon L830 has external dimensions of 110 x 76 x 91 mm (4.33 x 2.99 x 3.58″) and weighs 508 g (1.12 lb / 17.92 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 L830 and Nikon L820.
Here is the back view size comparison of Nikon L830 and Nikon L820.
Now lets look at the top view comparison of Nikon L830 and Nikon L820.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon L820 is 38g lighter than the Nikon L830 but we don't think this will make a significant difference.
Unfortunately neither Nikon Coolpix L830 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 Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Nikon L830 and Nikon L820's LCD screens has the same diagonal size of 3".
On the other hand, Nikon L830 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 L820 has a fixed type screen which provides less flexibility in shooting positions compared to L830.