Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Panasonic S5 and Canon 1D X III side-by-side from the front, back and top in their relative dimensions. Panasonic S5 has external dimensions of 133 x 97 x 82 mm (5.24 x 3.82 x 3.23″) and weighs 714 g (1.57 lb) (including batteries). Canon 1D X III has external dimensions of 158 x 168 x 83 mm (6.22 x 6.61 x 3.27″) and weighs 1440 g (3.17 lb / 50.79 oz) (including batteries).
Below you can see the front view size comparison of Panasonic S5 and Canon 1D X III. Panasonic S5 is clearly the smaller of the two cameras. Its body is 25mm narrower, 71mm shorter and 1mm thinner than Canon 1D X III.
Here is the back view size comparison of Panasonic S5 and Canon 1D X III.
Now lets look at the top view comparison of Panasonic S5 and Canon 1D X III.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic S5 is significantly lighter (726g ) than the Canon 1D X III which may become a big advantage especially on long walking trips.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since both Panasonic S5 and Canon 1D X III have the same Full frame sized sensor, their lenses for a similar focal length and aperture will be similar in size and weight.
Both S5 and 1D X MIII have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Canon 1D X III's 3.2 LCD screen is slightly larger than Panasonic S5's 3" screen.
On the other hand, Panasonic S5 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. On the other hand, Canon 1D X III has a fixed type screen which provides almost no flexibility in shooting positions compared to S5.