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 W350 and Nikon S3100 side-by-side from the front, back and top in their relative dimensions. Sony W350 has external dimensions of 91 x 52 x 17 mm (3.58 x 2.05 x 0.67″) and weighs 117 g (0.26 lb / 4.13 oz) (including batteries). Nikon S3100 has external dimensions of 94 x 58 x 18 mm (3.7 x 2.28 x 0.71″) and weighs 118 g (0.26 lb / 4.16 oz) (including batteries).
Below you can see the front-view size comparison of the Sony W350 and the Nikon S3100. Sony W350 is clearly the smaller of the two cameras. Its body is 3mm narrower, 6mm shorter and 1mm thinner than Nikon S3100.
Comparison image of the Sony W350 and the Nikon S3100 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Sony W350 and Nikon S3100.
Comparison image of the Sony W350 and the Nikon S3100 Size and Weight - Back View
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony W350 is 1g lighter than the Nikon S3100 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Sony Cyber-shot DSC-W350 nor Nikon Coolpix S3100 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Sony W350 and Nikon S3100's LCD screens have the same diagonal size of 2.70 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.