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 Sony W320 and Canon ELPH 340 HS side-by-side from the front, back and top in their relative dimensions. Sony W320 has external dimensions of 93 x 52 x 17 mm (3.66 x 2.05 x 0.67″) and weighs 117 g (0.26 lb / 4.13 oz) (including batteries). Canon ELPH 340 HS has external dimensions of 100 x 58 x 22 mm (3.93 x 2.27 x 0.88″) and weighs 147 g (0.32 lb / 5.19 oz) (including batteries).
Below you can see the front view size comparison of Sony W320 and Canon ELPH 340 HS. Sony W320 is clearly the smaller of the two cameras. Its body is 7mm narrower, 6mm shorter and 5mm thinner than Canon ELPH 340 HS.
Comparison image of Sony W320 and Canon ELPH 340 HS Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Sony W320 and Canon ELPH 340 HS.
Comparison image of Sony W320 and Canon ELPH 340 HS Size and Weight - Back View
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony W320 is significantly lighter (30g ) than the Canon ELPH 340 HS which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither Sony Cyber-shot DSC-W320 nor Canon PowerShot ELPH 340 HS (IXUS 265 HS) 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 340 HS's 3" LCD screen is slightly larger than Sony W320's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.