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 Panasonic GX1 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). Panasonic GX1 has external dimensions of 116 x 68 x 39 mm (4.57 x 2.68 x 1.54″) and weighs 318 g (0.70 lb / 11.22 oz) (including batteries).
Below you can see the front view size comparison of Nikon S9100 and Panasonic GX1. Nikon S9100 is clearly the smaller of the two cameras. Its body is 11mm narrower, 6mm shorter and 4mm thinner than Panasonic GX1. As you can tell, actually this is not a fair size comparison since Nikon S9100 has a built-in lens but Panasonic GX1 doesn't. Once you put a lens on GX1, its thickness will increase significantly.
![Nikon S9100 vs Panasonic GX1 Camera Size Comparison - Front View]()
Comparison image of Nikon S9100 and Panasonic GX1 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Nikon S9100 and Panasonic GX1.
![Nikon S9100 vs Panasonic GX1 Camera Size Comparison - Back View]()
Comparison image of Nikon S9100 and Panasonic GX1 Size and Weight - Back View
Now lets look at the top view comparison of Nikon S9100 and Panasonic GX1.
![Nikon S9100 vs Panasonic GX1 Camera Size Comparison - Top View]()
Top View Comparison image of Nikon S9100 and Panasonic GX1 Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon S9100 is significantly lighter (104g ) than the Panasonic GX1 which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on GX1, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither Nikon Coolpix S9100 nor Panasonic Lumix DMC-GX1 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 Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Nikon S9100 and Panasonic GX1'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.