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 Nikon S640 and Canon ELPH 310 HS side-by-side from the front, back and top in their relative dimensions. Nikon S640 has external dimensions of 91 x 55 x 21 mm (3.58 x 2.17 x 0.83″) and weighs 130 g (0.29 lb / 4.59 oz) (including batteries). 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).
Below you can see the front-view size comparison of the Nikon S640 and the Canon ELPH 310 HS. Nikon S640 is clearly the smaller of the two cameras. Its body is 5mm narrower, 2mm shorter and 1mm thinner than Canon ELPH 310 HS.
Comparison image of the Nikon S640 and the Canon ELPH 310 HS Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Nikon S640 and Canon ELPH 310 HS.
Comparison image of the Nikon S640 and the Canon ELPH 310 HS Size and Weight - Back View
Now lets look at the top view comparison of Nikon S640 and Canon ELPH 310 HS.
Top View Comparison image of the Nikon S640 and the Canon ELPH 310 HS Size
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S640 is 10g lighter than the Canon ELPH 310 HS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Nikon Coolpix S640 nor Canon ELPH 310 HS (IXUS 230 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's 3.00" LCD screen is slightly larger than Nikon S640's 2.7 screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.
