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 Canon G1 X III and Canon 750D side-by-side from the front, back and top in their relative dimensions. Canon G1 X III has external dimensions of 115 x 78 x 51 mm (4.53 x 3.07 x 2.01″) and weighs 399 g (0.88 lb / 14.07 oz) (including batteries). Canon 750D has external dimensions of 132 x 101 x 78 mm (5.2 x 3.98 x 3.07″) and weighs 555 g (1.22 lb / 19.58 oz) (including batteries).
Below you can see the front view size comparison of Canon G1 X III and Canon 750D. Canon G1 X III is clearly the smaller of the two cameras. Its body is 17mm narrower, 23mm shorter and 27mm thinner than Canon 750D. As you can tell, actually this is not a fair size comparison since Canon G1 X III has a built-in lens but Canon 750D doesn't. Once you put a lens on 750D, its thickness will increase significantly.
Here is the back view size comparison of Canon G1 X III and Canon 750D.
Now lets look at the top view comparison of Canon G1 X III and Canon 750D.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon G1 X III is significantly lighter (156g ) than the Canon 750D 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 750D, the total kit will weigh much higher.
With its weather sealed body, we believe that G1 X III has a big advantage over 750D which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Canon G1 X III and Canon 750D's LCD screens has the same diagonal size of 3".
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 Selfie shots and video.