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 Panasonic LZ40 and Nikon L820 side-by-side from the front, back and top in their relative dimensions. Panasonic LZ40 has external dimensions of 126 x 87 x 94 mm (4.96 x 3.43 x 3.7″) and weighs 524 g (1.16 lb / 18.48 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 the Panasonic LZ40 and the Nikon L820. Nikon L820 is clearly the smaller of the two cameras. Its body is 15mm narrower, 11mm shorter and 9mm thinner than Panasonic LZ40.
Now lets look at the top view comparison of Panasonic LZ40 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 54g lighter than the Panasonic LZ40 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-LZ40 nor Nikon Coolpix L820 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 Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Panasonic LZ40 and Nikon L820's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.