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 Casio EX-ZR15 and Canon SX40 HS side-by-side from the front, back and top in their relative dimensions. Casio EX-ZR15 has external dimensions of 102 x 59 x 27 mm (4.02 x 2.32 x 1.06″) and weighs 176 g (0.39 lb / 6.21 oz) (including batteries). Canon SX40 HS has external dimensions of 123 x 92 x 108 mm (4.84 x 3.62 x 4.25″) and weighs 600 g (1.32 lb / 21.16 oz) (including batteries).
Below you can see the front-view size comparison of the Casio EX-ZR15 and the Canon SX40 HS. Casio EX-ZR15 is clearly the smaller of the two cameras. Its body is 21mm narrower, 33mm shorter and 81mm thinner than Canon SX40 HS.
Here is the back view size comparison of the Casio EX-ZR15 and Canon SX40 HS.
Now lets look at the top view comparison of Casio EX-ZR15 and Canon SX40 HS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-ZR15 is significantly lighter (424g ) than the Canon SX40 HS which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Casio Exilim EX-ZR15 nor Canon PowerShot SX40 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 Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Casio EX-ZR15's 3.00" LCD screen is slightly larger than Canon SX40 HS's 2.7 screen.