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 SD940 IS and Nikon S4300 side-by-side from the front, back and top in their relative dimensions. Canon SD940 IS has external dimensions of 89 x 55 x 20 mm (3.5 x 2.17 x 0.79″) and weighs 120 g (0.26 lb / 4.23 oz) (including batteries). Nikon S4300 has external dimensions of 96 x 59 x 21 mm (3.78 x 2.32 x 0.83″) and weighs 139 g (0.31 lb / 4.90 oz) (including batteries).
Below you can see the front view size comparison of Canon SD940 IS and Nikon S4300. Canon SD940 IS is clearly the smaller of the two cameras. Its body is 7mm narrower, 4mm shorter and 1mm thinner than Nikon S4300.
Here is the back view size comparison of Canon SD940 IS and Nikon S4300.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon SD940 IS is 19g lighter than the Nikon S4300 but we don't think this will make a significant difference.
Unfortunately neither Canon PowerShot SD940 IS / Digital IXUS 120 IS nor Nikon Coolpix S4300 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
Nikon S4300's 3" LCD screen is slightly larger than Canon SD940 IS's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.