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 Olympus E-M10 IV and Canon SX720 HS side-by-side from the front, back and top in their relative dimensions. Olympus E-M10 IV has external dimensions of 122 x 84 x 49 mm (4.8 x 3.31 x 1.93″) and weighs 383 g (0.84 lb / 13.51 oz) (including batteries). Canon SX720 HS has external dimensions of 110 x 64 x 36 mm (4.33 x 2.52 x 1.42″) and weighs 270 g (0.60 lb / 9.52 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus E-M10 IV and the Canon SX720 HS. Canon SX720 HS is clearly the smaller of the two cameras. Its body is 12mm narrower, 20mm shorter and 13mm thinner than Olympus E-M10 IV. As you can tell, actually this is not a fair size comparison since Canon SX720 HS has a built-in lens but Olympus E-M10 IV doesn't. Once you put a lens on E-M10 IV, its thickness will increase significantly.
Here is the back view size comparison of the Olympus E-M10 IV and Canon SX720 HS.
Now lets look at the top view comparison of Olympus E-M10 IV and Canon SX720 HS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon SX720 HS is significantly lighter (113g ) than the Olympus E-M10 IV 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-M10 IV, the total kit will weigh much higher.
Weather Sealing
Unfortunately neither the Olympus OM-D E-M10 IV nor Canon PowerShot SX720 HS provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Mirrorless Cameras with Weather Sealing Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Olympus E-M10 IV and Canon SX720 HS's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Olympus E-M10 IV features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels whereas the Canon SX720 HS has a fixed type screen which provides less flexibility in shooting positions compared to E-M10 IV.