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 L21 and Nikon L20 side-by-side from the front, back and top in their relative dimensions. Nikon L21 has external dimensions of 92 x 67 x 28 mm (3.62 x 2.64 x 1.1″) and weighs 169 g (0.37 lb / 5.96 oz) (including batteries). Nikon L20 has external dimensions of 61 x 97 x 29 mm (2.4 x 3.82 x 1.14″) and weighs 135 g (0.30 lb / 4.76 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon L21 and the Nikon L20. Nikon L21 is 30mm shorter and 1mm thinner than Nikon L20 but it is also 31mm wider.
Here is the back view size comparison of the Nikon L21 and Nikon L20.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon L20 is significantly lighter (34g ) than the Nikon L21 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Nikon Coolpix L21 nor Nikon Coolpix L20 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
LCD Screen Size and Features
Nikon L20's 3.00" LCD screen is slightly larger than Nikon L21's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.