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 XZ-10 and Nikon P7100 side-by-side from the front, back and top in their relative dimensions. Olympus XZ-10 has external dimensions of 102 x 61 x 34 mm (4.03 x 2.41 x 1.35″) and weighs 221 g (0.49 lb / 7.80 oz) (including batteries). Nikon P7100 has external dimensions of 116 x 77 x 48 mm (4.57 x 3.03 x 1.89″) and weighs 395 g (0.87 lb / 13.93 oz) (including batteries).
Below you can see the front view size comparison of Olympus XZ-10 and Nikon P7100. Olympus XZ-10 is clearly the smaller of the two cameras. Its body is 14mm narrower, 16mm shorter and 14mm thinner than Nikon P7100.
Now lets look at the top view comparison of Olympus XZ-10 and Nikon P7100.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus XZ-10 is significantly lighter (174g ) than the Nikon P7100 which may become a big advantage especially on long walking trips.
Unfortunately neither Olympus Stylus XZ-10 nor Nikon Coolpix P7100 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
Olympus XZ-10 and Nikon P7100's LCD screens has the same diagonal size of 3".
On the other hand, Nikon P7100 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 Olympus XZ-10 has a fixed type screen which provides less flexibility in shooting positions compared to P7100.