Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the Samsung NX100 and Pentax X-5 side-by-side from the front, back and top in their relative dimensions. Samsung NX100 has external dimensions of 120 x 71 x 35 mm (4.72 x 2.8 x 1.38″) and weighs 282 g (0.62 lb / 9.95 oz) (including batteries). Pentax X-5 has external dimensions of 119 x 86 x 107 mm (4.69 x 3.39 x 4.21″) and weighs 595 g (1.31 lb / 20.99 oz) (including batteries).
Below you can see the front-view size comparison of the Samsung NX100 and the Pentax X-5. Samsung NX100 is 15mm shorter and 72mm thinner than Pentax X-5 but it is also 1mm wider. As you can tell, actually this is not a fair size comparison since Pentax X-5 has a built-in lens but Samsung NX100 doesn't. Once you put a lens on NX100, its thickness will increase significantly.
Now lets look at the top view comparison of Samsung NX100 and Pentax X-5.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Samsung NX100 is significantly lighter (313g ) than the Pentax X-5 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 NX100, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Samsung NX100 nor Pentax X-5 provides any type of weather sealing in their bodies, 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 Mirrorless Cameras with Weather Sealing Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Samsung NX100 and Pentax X-5's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Pentax X-5 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 Samsung NX100 has a fixed type screen which provides less flexibility in shooting positions compared to X-5.