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 Olympus SZ-30MR and Samsung NX20 side-by-side from the front, back and top in their relative dimensions. Olympus SZ-30MR has external dimensions of 106 x 69 x 40 mm (4.17 x 2.72 x 1.57″) and weighs 226 g (0.50 lb / 7.97 oz) (including batteries). Samsung NX20 has external dimensions of 122 x 90 x 40 mm (4.8 x 3.54 x 1.57″) and weighs 341 g (0.75 lb / 12.03 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus SZ-30MR and the Samsung NX20. As you can tell, actually this is not a fair size comparison since Olympus SZ-30MR has a built-in lens but Samsung NX20 doesn't. Once you put a lens on NX20, its thickness will increase significantly.
Now lets look at the top view comparison of Olympus SZ-30MR and Samsung NX20.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus SZ-30MR is significantly lighter (115g ) than the Samsung NX20 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 NX20, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Olympus SZ-30MR nor Samsung NX20 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 Compact Cameras with Weather Sealing Top Mirrorless Cameras with Weather Sealing
LCD Screen Size and Features
Olympus SZ-30MR and Samsung NX20's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Samsung NX20 sports a
Fully Articulated screen which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over-the-head levels, and especially very useful for shooting selfies and video. Olympus SZ-30MR's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to NX20.