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 E-P5 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 E-P5 has external dimensions of 122 x 69 x 37 mm (4.8 x 2.72 x 1.46″) and weighs 420 g (0.93 lb / 14.82 oz) (including batteries).
Below you can see the front view size comparison of Nikon S9100 and Olympus E-P5. Nikon S9100 is clearly the smaller of the two cameras. Its body is 17mm narrower, 7mm shorter and 2mm thinner than Olympus E-P5. As you can tell, actually this is not a fair size comparison since Nikon S9100 has a built-in lens but Olympus E-P5 doesn't. Once you put a lens on E-P5, its thickness will increase significantly.
![Nikon S9100 vs Olympus E-P5 Camera Size Comparison - Front View]()
Comparison image of Nikon S9100 and Olympus E-P5 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Nikon S9100 and Olympus E-P5.
![Nikon S9100 vs Olympus E-P5 Camera Size Comparison - Back View]()
Comparison image of Nikon S9100 and Olympus E-P5 Size and Weight - Back View
Now lets look at the top view comparison of Nikon S9100 and Olympus E-P5.
![Nikon S9100 vs Olympus E-P5 Camera Size Comparison - Top View]()
Top View Comparison image of Nikon S9100 and Olympus E-P5 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 (206g ) than the Olympus E-P5 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 E-P5, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither Nikon Coolpix S9100 nor Olympus PEN E-P5 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 Olympus E-P5's LCD screens has the same diagonal size of 3".
On the other hand, Olympus E-P5 features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Nikon S9100 has a fixed type screen which provides less flexibility in shooting positions compared to E-P5.