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 W800 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 W800 has external dimensions of 97 x 55 x 21 mm (1.97 x 0.87 x 2.13″) and weighs 125 g (0.28 lb / 4.41 oz) (including batteries).
Below you can see the front view size comparison of Canon ELPH 150 IS and Sony W800. Sony W800 is 2mm shorter and 3mm thinner than Canon ELPH 150 IS but it is also 2mm wider.
Here is the back view size comparison of Canon ELPH 150 IS and Sony W800.
Now lets look at the top view comparison of Canon ELPH 150 IS and Sony W800.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony W800 is 17g lighter than the Canon ELPH 150 IS but we don't think this will make a significant difference.
Unfortunately neither Canon PowerShot ELPH 150 IS (IXUS 155) nor Sony Cyber-shot DSC-W800 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 W800'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.