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 SZ7 and Nikon P310 side-by-side from the front, back and top in their relative dimensions. Panasonic SZ7 has external dimensions of 99 x 59 x 21 mm (3.9 x 2.32 x 0.83″) and weighs 133 g (0.29 lb / 4.69 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 SZ7 and the Nikon P310. Panasonic SZ7 is 4mm narrower and 11mm thinner than Nikon P310 but it is also 1mm taller.
Here is the back view size comparison of the Panasonic SZ7 and Nikon P310.
Now lets look at the top view comparison of Panasonic SZ7 and Nikon P310.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic SZ7 is significantly lighter (61g ) than the Nikon P310 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-SZ7 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Panasonic SZ7 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.