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 Samsung ST90 and Canon ELPH 340 HS side-by-side from the front, back and top in their relative dimensions. Samsung ST90 has external dimensions of 92 x 53 x 17 mm (3.62 x 2.09 x 0.67″) and weighs (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 the Samsung ST90 and the Canon ELPH 340 HS. Samsung ST90 is clearly the smaller of the two cameras. Its body is 8mm narrower, 5mm shorter and 5mm thinner than Canon ELPH 340 HS.
Here is the back view size comparison of the Samsung ST90 and Canon ELPH 340 HS.
Now lets look at the top view comparison of Samsung ST90 and Canon ELPH 340 HS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Samsung ST90 is 147g lighter than the Canon ELPH 340 HS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Samsung ST90 nor Canon PowerShot ELPH 340 HS (IXUS 265 HS) 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
Samsung ST90 and Canon ELPH 340 HS's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.