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 Panasonic ZS45 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). Panasonic ZS45 has external dimensions of 108 x 60 x 32 mm (4.25 x 2.36 x 1.26″) and weighs 249 g (0.55 lb / 8.78 oz) (including batteries).
Below you can see the front-view size comparison of the Samsung NX100 and the Panasonic ZS45. Panasonic ZS45 is clearly the smaller of the two cameras. Its body is 12mm narrower, 11mm shorter and 3mm thinner than Samsung NX100. As you can tell, actually this is not a fair size comparison since Panasonic ZS45 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 Panasonic ZS45.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS45 is 33g lighter than the Samsung NX100 but we don't think this will make a significant difference.
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 Panasonic Lumix DMC-ZS45 (Lumix DMC-TZ57) 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Samsung NX100 and Panasonic ZS45's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Panasonic ZS45 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 ZS45.