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 LZ20 and Nikon P310 side-by-side from the front, back and top in their relative dimensions. Panasonic LZ20 has external dimensions of 120 x 76 x 80 mm (4.72 x 2.99 x 3.15″) and weighs 499 g (1.10 lb / 17.60 oz) (including batteries). Nikon P310 has external dimensions of 103 x 58 x 32 mm (4.06 x 2.28 x 1.26″) and weighs 194 g (0.43 lb / 6.84 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic LZ20 and the Nikon P310. Nikon P310 is clearly the smaller of the two cameras. Its body is 17mm narrower, 18mm shorter and 48mm thinner than Panasonic LZ20.
Here is the back view size comparison of the Panasonic LZ20 and Nikon P310.
Now lets look at the top view comparison of Panasonic LZ20 and Nikon P310.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon P310 is significantly lighter (305g ) than the Panasonic LZ20 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-LZ20 nor Nikon Coolpix P310 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 Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Panasonic LZ20 and Nikon P310'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.