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 S9100 and Nikon S3300 side-by-side from the front, back and top in their relative dimensions. Nikon S9100 has external dimensions of 105 x 62 x 35 mm (4.13 x 2.44 x 1.38″) and weighs 214 g (0.47 lb / 7.55 oz) (including batteries). Nikon S3300 has external dimensions of 95 x 58 x 19 mm (3.74 x 2.28 x 0.75″) and weighs 128 g (0.28 lb / 4.52 oz) (including batteries).
Below you can see the front view size comparison of Nikon S9100 and Nikon S3300. Nikon S3300 is clearly the smaller of the two cameras. Its body is 10mm narrower, 4mm shorter and 16mm thinner than Nikon S9100.
Here is the back view size comparison of Nikon S9100 and Nikon S3300.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon S3300 is significantly lighter (86g ) than the Nikon S9100 which may become a big advantage especially on long walking trips.
Unfortunately neither Nikon Coolpix S9100 nor Nikon Coolpix S3300 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
Nikon S9100's 3" LCD screen is slightly larger than Nikon S3300's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.