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 Nikon L31 and Pentax XG-1 side-by-side from the front, back and top in their relative dimensions. Nikon L31 has external dimensions of 96 x 59 x 29 mm (3.78 x 2.32 x 1.14″) and weighs 160 g (0.35 lb / 5.64 oz) (including batteries). Pentax XG-1 has external dimensions of 119 x 89 x 98 mm (4.69 x 3.5 x 3.84″) and weighs 567 g (1.25 lb / 20.00 oz) (including batteries).
Below you can see the front view size comparison of Nikon L31 and Pentax XG-1. Nikon L31 is clearly the smaller of the two cameras. Its body is 23mm narrower, 30mm shorter and 69mm thinner than Pentax XG-1.
Here is the back view size comparison of Nikon L31 and Pentax XG-1.
Now lets look at the top view comparison of Nikon L31 and Pentax XG-1.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon L31 is significantly lighter (407g ) than the Pentax XG-1 which may become a big advantage especially on long walking trips.
Unfortunately neither Nikon Coolpix L31 nor Pentax XG-1 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 Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Pentax XG-1's 3 LCD screen is slightly larger than Nikon L31's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.