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 Canon G5 X and Olympus E-M5 III side-by-side from the front, back and top in their relative dimensions. Canon G5 X has external dimensions of 112 x 76 x 44 mm (4.41 x 2.99 x 1.73″) and weighs 353 g (0.78 lb / 12.45 oz) (including batteries). Olympus E-M5 III has external dimensions of 125 x 85 x 50 mm (4.92 x 3.35 x 1.97″) and weighs 414 g (0.91 lb / 14.60 oz) (including batteries).
Below you can see the front-view size comparison of the Canon G5 X and the Olympus E-M5 III. Canon G5 X is clearly the smaller of the two cameras. Its body is 13mm narrower, 9mm shorter and 6mm thinner than Olympus E-M5 III. As you can tell, actually this is not a fair size comparison since Canon G5 X has a built-in lens but Olympus E-M5 III doesn't. Once you put a lens on E-M5 Mark III, its thickness will increase significantly.
Here is the back view size comparison of the Canon G5 X and Olympus E-M5 III.
Now lets look at the top view comparison of Canon G5 X and Olympus E-M5 III.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon G5 X is significantly lighter (61g ) than the Olympus E-M5 III 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 E-M5 Mark III, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the E-M5 Mark III, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the G5 X.
LCD Screen Size and Features
Canon G5 X and Olympus E-M5 III's LCD screens have the same diagonal size of 3.00 inches.
Both cameras feature
Fully Articulating screens where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. Fully articulating screens are also useful for taking Selfies and video.