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 ELPH 150 IS and Sony WX50 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 WX50 has external dimensions of 92 x 52 x 19 mm (3.62 x 2.05 x 0.75″) and weighs 117 g (0.26 lb / 4.13 oz) (including batteries).
Below you can see the front view size comparison of Canon ELPH 150 IS and Sony WX50. Sony WX50 is clearly the smaller of the two cameras. Its body is 3mm narrower, 5mm shorter and 5mm thinner than Canon ELPH 150 IS.
Here is the back view size comparison of Canon ELPH 150 IS and Sony WX50.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony WX50 is significantly lighter (25g ) than the Canon ELPH 150 IS which may become a big advantage especially on long walking trips.
Unfortunately neither Canon PowerShot ELPH 150 IS (IXUS 155) nor Sony Cyber-shot DSC-WX50 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 ELPH 150 IS and Sony WX50's LCD screens has the same diagonal size of 2.70".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.