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 310 HS and Canon Elph 115 IS side-by-side from the front, back and top in their relative dimensions. Canon ELPH 310 HS has external dimensions of 96 x 57 x 22 mm (3.78 x 2.24 x 0.87″) and weighs 140 g (0.31 lb / 4.94 oz) (including batteries). Canon Elph 115 IS has external dimensions of 93 x 57 x 20 mm (3.66 x 2.24 x 0.79″) and weighs 135 g (0.30 lb / 4.76 oz) (including batteries).
Below you can see the front-view size comparison of the Canon ELPH 310 HS and the Canon Elph 115 IS. Canon ELPH 310 HS has the same height with Canon Elph 115 IS. On the other hand, with a width of 96mm, it is 3 wider and also with a thickness of 22mm, it is 2mm thicker than Canon Elph 115 IS.
Here is the back view size comparison of the Canon ELPH 310 HS and Canon Elph 115 IS.
Now lets look at the top view comparison of Canon ELPH 310 HS and Canon Elph 115 IS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon Elph 115 IS is 5g lighter than the Canon ELPH 310 HS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Canon ELPH 310 HS (IXUS 230 HS) nor Canon Elph 115 IS (IXUS 132 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
Canon ELPH 310 HS and Canon Elph 115 IS'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.