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 G9 X and Sony W730 side-by-side from the front, back and top in their relative dimensions. Canon G9 X has external dimensions of 98 x 58 x 31 mm (3.86 x 2.28 x 1.21″) and weighs 209 g (0.46 lb / 7.37 oz) (including batteries). Sony W730 has external dimensions of 93 x 52 x 22 mm (3.66 x 2.05 x 0.87″) and weighs 122 g (0.27 lb / 4.30 oz) (including batteries).
Below you can see the front view size comparison of Canon G9 X and Sony W730. Sony W730 is clearly the smaller of the two cameras. Its body is 5mm narrower, 6mm shorter and 9mm thinner than Canon G9 X.
Here is the back view size comparison of Canon G9 X and Sony W730.
Now lets look at the top view comparison of Canon G9 X and Sony W730.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony W730 is significantly lighter (87g ) than the Canon G9 X which may become a big advantage especially on long walking trips.
Unfortunately neither Canon PowerShot G9 X nor Sony Cyber-shot DSC-W730 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 G9 X's 3" LCD screen is slightly larger than Sony W730's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.