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 SX420 IS and Canon G3 X side-by-side from the front, back and top in their relative dimensions. Canon SX420 IS has external dimensions of 104 x 69 x 85 mm (4.09 x 2.72 x 3.35″) and weighs 325 g (0.72 lb / 11.46 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 Canon SX420 IS and Canon G3 X. Canon SX420 IS is clearly the smaller of the two cameras. Its body is 19mm narrower, 8mm shorter and 20mm thinner than Canon G3 X.
Here is the back view size comparison of Canon SX420 IS and Canon G3 X.
Now lets look at the top view comparison of Canon SX420 IS 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 SX420 IS is significantly lighter (408g ) than the Canon G3 X which may become a big advantage especially on long walking trips.
Thanks to the weather sealed body of G3 X, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to SX420 IS.
LCD Screen Size and Features
Canon G3 X's 3.2" LCD screen is slightly larger than Canon SX420 IS's 3" screen.
In addition to the size advantage, Canon G3 X LCD screen also has a Tilting feature
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. On the other hand, Canon SX420 IS has a fixed type screen which provides less flexibility in shooting positions compared to G3 X.