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 Panasonic FH10 and Nikon P340 side-by-side from the front, back and top in their relative dimensions. Panasonic FH10 has external dimensions of 94 x 54 x 18 mm (3.7 x 2.13 x 0.71″) and weighs 103 g (0.23 lb / 3.63 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 Panasonic FH10 and Nikon P340. Panasonic FH10 is clearly the smaller of the two cameras. Its body is 9mm narrower, 4mm shorter and 14mm thinner than Nikon P340.
Now lets look at the top view comparison of Panasonic FH10 and Nikon P340.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic FH10 is significantly lighter (91g ) than the Nikon P340 which may become a big advantage especially on long walking trips.
Unfortunately neither Panasonic Lumix DMC-FH10 nor Nikon Coolpix P340 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Nikon P340's 3" LCD screen is slightly larger than Panasonic FH10's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.