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 Olympus TG-320 and Nikon P310 side-by-side from the front, back and top in their relative dimensions. Olympus TG-320 has external dimensions of 96 x 63 x 23 mm (3.78 x 2.48 x 0.91″) and weighs 155 g (0.34 lb / 5.47 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 Olympus TG-320 and the Nikon P310. Olympus TG-320 is 7mm narrower and 9mm thinner than Nikon P310 but it is also 5mm taller.
Here is the back view size comparison of the Olympus TG-320 and Nikon P310.
Now lets look at the top view comparison of Olympus TG-320 and Nikon P310.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus TG-320 is significantly lighter (39g ) than the Nikon P310 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the TG-320, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the P310.
LCD Screen Size and Features
Nikon P310's 3.00" LCD screen is slightly larger than Olympus TG-320's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.