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 Pentax WG-3 GPS 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). Pentax WG-3 GPS has external dimensions of 125 x 64 x 33 mm (4.9 x 2.5 x 1.3″) and weighs 238 g (0.52 lb / 8.40 oz) (including batteries).
Below you can see the front view size comparison of Nikon S9100 and Pentax WG-3 GPS. Nikon S9100 is 20mm narrower and 2mm shorter than Pentax WG-3 GPS but it is also 2mm thicker.
![Nikon S9100 vs Pentax WG-3 GPS Camera Size Comparison - Front View]()
Comparison image of Nikon S9100 and Pentax WG-3 GPS Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Nikon S9100 and Pentax WG-3 GPS.
![Nikon S9100 vs Pentax WG-3 GPS Camera Size Comparison - Back View]()
Comparison image of Nikon S9100 and Pentax WG-3 GPS Size and Weight - Back View
Now lets look at the top view comparison of Nikon S9100 and Pentax WG-3 GPS.
![Nikon S9100 vs Pentax WG-3 GPS Camera Size Comparison - Top View]()
Top View Comparison image of Nikon S9100 and Pentax WG-3 GPS Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon S9100 is 24g lighter than the Pentax WG-3 GPS but we don't think this will make a significant difference.
Weather Sealing
LCD Screen Size and Features
Nikon S9100 and Pentax WG-3 GPS'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.