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 ELPH 150 IS and Sony W830 side-by-side from the front, back and top in their relative dimensions. Canon ELPH 150 IS has external dimensions of 95 x 57 x 24 mm (3.74 x 2.24 x 0.94″) and weighs 142 g (0.31 lb / 5.01 oz) (including batteries). Sony W830 has external dimensions of 93 x 52 x 23 mm (3.66 x 2.05 x 0.91″) and weighs 122 g (0.27 lb / 4.30 oz) (including batteries).
Below you can see the front-view size comparison of the Canon ELPH 150 IS and the Sony W830. Sony W830 is clearly the smaller of the two cameras. Its body is 2mm narrower, 5mm shorter and 1mm thinner than Canon ELPH 150 IS.
Here is the back view size comparison of the Canon ELPH 150 IS and Sony W830.
Now lets look at the top view comparison of Canon ELPH 150 IS and Sony W830.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony W830 is significantly lighter (20g ) than the Canon ELPH 150 IS which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Canon PowerShot ELPH 150 IS (IXUS 155) nor Sony Cyber-shot DSC-W830 provides any type of weather sealing in their bodies, 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 ELPH 150 IS and Sony W830's LCD screens have the same diagonal size of 2.70 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.