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 G7 X MIII and Canon G3 X side-by-side from the front, back and top in their relative dimensions. Canon G7 X MIII has external dimensions of 105 x 61 x 41 mm (4.13 x 2.4 x 1.61″) and weighs 304 g (0.67 lb / 10.72 oz) (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 the Canon G7 X MIII and the Canon G3 X. Canon G7 X MIII is clearly the smaller of the two cameras. Its body is 18mm narrower, 16mm shorter and 64mm thinner than Canon G3 X.
Here is the back view size comparison of the Canon G7 X MIII and Canon G3 X.
Now lets look at the top view comparison of Canon G7 X MIII and Canon G3 X.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon G7 X MIII is significantly lighter (429g ) than the Canon G3 X which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the G3 X, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the G7 X MIII.
LCD Screen Size and Features
Canon G3 X's 3.20" LCD screen is slightly larger than Canon G7 X MIII's 3 screen.