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 G3 X 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 G3 X has external dimensions of 123 x 77 x 105 mm (4.84 x 3.03 x 4.13″) and weighs 733 g (1.62 lb / 25.86 oz) (including batteries).
Below you can see the front view size comparison of Panasonic S5 and Canon G3 X. Canon G3 X is 10mm narrower and 20mm shorter than Panasonic S5 but it is also 23mm thicker. As you can tell, actually this is not a fair size comparison since Canon G3 X has a built-in lens but Panasonic S5 doesn't. Once you put a lens on S5, its thickness will increase significantly.
Here is the back view size comparison of Panasonic S5 and Canon G3 X.
Now lets look at the top view comparison of Panasonic S5 and Canon G3 X.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic S5 is 19g lighter than the Canon G3 X 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 S5, the total kit will weigh much higher.
Both S5 and G3 X have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Canon G3 X's 3.2" LCD screen is slightly larger than Panasonic S5's 3" screen.