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 SX120 IS and Canon G1 X II side-by-side from the front, back and top in their relative dimensions. Canon SX120 IS has external dimensions of 111 x 71 x 45 mm (4.37 x 2.8 x 1.77″) and weighs 285 g (0.63 lb / 10.05 oz) (including batteries). Canon G1 X II has external dimensions of 116 x 74 x 66 mm (4.57 x 2.91 x 2.6″) and weighs 553 g (1.22 lb / 19.51 oz) (including batteries).
Below you can see the front view size comparison of Canon SX120 IS and Canon G1 X II. Canon SX120 IS is clearly the smaller of the two cameras. Its body is 5mm narrower, 3mm shorter and 21mm thinner than Canon G1 X II.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon SX120 IS is significantly lighter (268g ) than the Canon G1 X II which may become a big advantage especially on long walking trips.
Unfortunately neither Canon PowerShot SX120 IS nor Canon PowerShot G1 X Mark II provides any type of weather sealing in their body, 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Canon SX120 IS and Canon G1 X II's LCD screens has the same diagonal size of 3".
On the other hand, Canon G1 X II 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 SX120 IS has a fixed type screen which provides less flexibility in shooting positions compared to G1 X MII.