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 Olympus VG-145 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). Olympus VG-145 has external dimensions of 96 x 57 x 19 mm (3.78 x 2.24 x 0.75″) and weighs 120 g (0.26 lb / 4.23 oz) (including batteries).
Below you can see the front view size comparison of Nikon S9100 and Olympus VG-145. Olympus VG-145 is clearly the smaller of the two cameras. Its body is 9mm narrower, 5mm shorter and 16mm thinner than Nikon S9100.
Comparison image of Nikon S9100 and Olympus VG-145 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Nikon S9100 and Olympus VG-145.
Comparison image of Nikon S9100 and Olympus VG-145 Size and Weight - Back View
Now lets look at the top view comparison of Nikon S9100 and Olympus VG-145.
Top View Comparison image of Nikon S9100 and Olympus VG-145 Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus VG-145 is significantly lighter (94g ) than the Nikon S9100 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither Nikon Coolpix S9100 nor Olympus VG-145 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 and Olympus VG-145's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.