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 Nikon Df and Sony HX20V side-by-side from the front, back and top in their relative dimensions. Nikon Df has external dimensions of 144 x 110 x 67 mm (5.67 x 4.33 x 2.64″) and weighs 760 g (1.68 lb / 26.81 oz) (including batteries). Sony HX20V has external dimensions of 107 x 62 x 35 mm (4.21 x 2.44 x 1.38″) and weighs 254 g (0.56 lb / 8.96 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon Df and the Sony HX20V. Sony HX20V is clearly the smaller of the two cameras. Its body is 37mm narrower, 48mm shorter and 32mm thinner than Nikon Df. As you can tell, actually this is not a fair size comparison since Sony HX20V has a built-in lens but Nikon Df doesn't. Once you put a lens on Df, its thickness will increase significantly.
Here is the back view size comparison of the Nikon Df and Sony HX20V.
Now lets look at the top view comparison of Nikon Df and Sony HX20V.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony HX20V is significantly lighter (506g ) than the Nikon Df 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 Df, the total kit will weigh much higher.
Weather Sealing
With its weather-sealed body, we believe that the Df has a big advantage over the HX20V which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Nikon Df's 3.20" LCD screen is slightly larger than Sony HX20V's 3" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.