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 Olympus TG-820 iHS and Nikon P7800 side-by-side from the front, back and top in their relative dimensions. Olympus TG-820 iHS has external dimensions of 101 x 65 x 26 mm (3.98 x 2.56 x 1.02″) and weighs 206 g (0.45 lb / 7.27 oz) (including batteries). Nikon P7800 has external dimensions of 119 x 78 x 50 mm (4.69 x 3.07 x 1.97″) and weighs 399 g (0.88 lb / 14.07 oz) (including batteries).
Below you can see the front view size comparison of Olympus TG-820 iHS and Nikon P7800. Olympus TG-820 iHS is clearly the smaller of the two cameras. Its body is 18mm narrower, 13mm shorter and 24mm thinner than Nikon P7800.
Here is the back view size comparison of Olympus TG-820 iHS and Nikon P7800.
Now lets look at the top view comparison of Olympus TG-820 iHS and Nikon P7800.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus TG-820 iHS is significantly lighter (193g ) than the Nikon P7800 which may become a big advantage especially on long walking trips.
LCD Screen Size and Features
Olympus TG-820 iHS and Nikon P7800's LCD screens has the same diagonal size of 3".
On the other hand, Nikon P7800 sports a Fully Articulated screen
which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over the head levels, and especially very useful for shooting selfies and video. Olympus TG-820 iHS's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to P7800.