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 A10 and Nikon P340 side-by-side from the front, back and top in their relative dimensions. Nikon A10 has external dimensions of 96 x 59 x 29 mm (3.78 x 2.32 x 1.14″) and weighs 160 g (0.35 lb / 5.64 oz) (including batteries). Nikon P340 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 Nikon A10 and the Nikon P340. Nikon A10 is 7mm narrower and 3mm thinner than Nikon P340 but it is also 1mm taller.
Here is the back view size comparison of the Nikon A10 and Nikon P340.
Now lets look at the top view comparison of Nikon A10 and Nikon P340.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon A10 is significantly lighter (34g ) than the Nikon P340 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Nikon Coolpix A10 nor Nikon Coolpix P340 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 P340's 3.00" LCD screen is slightly larger than Nikon A10's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.