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 Sony NEX-C3 and Nikon P310 side-by-side from the front, back and top in their relative dimensions. Sony NEX-C3 has external dimensions of 110 x 60 x 33 mm (4.33 x 2.36 x 1.3″) and weighs 225 g (0.50 lb / 7.94 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 Sony NEX-C3 and the Nikon P310. Nikon P310 is clearly the smaller of the two cameras. Its body is 7mm narrower, 2mm shorter and 1mm thinner than Sony NEX-C3. As you can tell, actually this is not a fair size comparison since Nikon P310 has a built-in lens but Sony NEX-C3 doesn't. Once you put a lens on NEX-C3, its thickness will increase significantly.
Here is the back view size comparison of the Sony NEX-C3 and Nikon P310.
Now lets look at the top view comparison of Sony NEX-C3 and Nikon P310.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on NEX-C3, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Sony Alpha NEX-C3 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 Mirrorless Cameras with Weather Sealing Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Sony NEX-C3 and Nikon P310's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Sony NEX-C3 features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels whereas the Nikon P310 has a fixed type screen which provides less flexibility in shooting positions compared to NEX-C3.