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 GX-20 and Casio EX-ZR10 side-by-side from the front, back and top in their relative dimensions. Samsung GX-20 has external dimensions of 142 x 101 x 72 mm (5.59 x 3.98 x 2.83″) and weighs 800 g (1.76 lb / 28.22 oz) (including batteries). Casio EX-ZR10 has external dimensions of 102 x 69 x 27 mm (4.02 x 2.72 x 1.06″) and weighs 176 g (0.39 lb / 6.21 oz) (including batteries).
Below you can see the front-view size comparison of the Samsung GX-20 and the Casio EX-ZR10. Casio EX-ZR10 is clearly the smaller of the two cameras. Its body is 40mm narrower, 32mm shorter and 45mm thinner than Samsung GX-20. As you can tell, actually this is not a fair size comparison since Casio EX-ZR10 has a built-in lens but Samsung GX-20 doesn't. Once you put a lens on GX-20, its thickness will increase significantly.
Here is the back view size comparison of the Samsung GX-20 and Casio EX-ZR10.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-ZR10 is significantly lighter (624g ) than the Samsung GX-20 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 GX-20, the total kit will weigh much higher.
Weather Sealing
With its weather-sealed body, we believe that the GX-20 has a big advantage over the EX-ZR10 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Casio EX-ZR10's 3.00" LCD screen is slightly larger than Samsung GX-20's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.