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 P7000 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 P7000 has external dimensions of 114 x 77 x 45 mm (4.5 x 3.03 x 1.76″) and weighs 310 g (0.68 lb / 10.93 oz) (including batteries).
Below you can see the front view size comparison of Canon SD940 IS and Nikon P7000. Canon SD940 IS is clearly the smaller of the two cameras. Its body is 25mm narrower, 22mm shorter and 25mm thinner than Nikon P7000.
Here is the back view size comparison of Canon SD940 IS and Nikon P7000.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon SD940 IS is significantly lighter (190g ) than the Nikon P7000 which may become a big advantage especially on long walking trips.
Unfortunately neither Canon PowerShot SD940 IS / Digital IXUS 120 IS nor Nikon Coolpix P7000 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 P7000'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.