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 G16 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 G16 has external dimensions of 109 x 76 x 40 mm (4.29 x 2.99 x 1.57″) and weighs 356 g (0.78 lb / 12.56 oz) (including batteries).
Below you can see the front-view size comparison of the Casio EX-ZR15 and the Canon G16. Casio EX-ZR15 is clearly the smaller of the two cameras. Its body is 7mm narrower, 17mm shorter and 13mm thinner than Canon G16.
Here is the back view size comparison of the Casio EX-ZR15 and Canon G16.
Now lets look at the top view comparison of Casio EX-ZR15 and Canon G16.
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 (180g ) than the Canon G16 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Casio Exilim EX-ZR15 nor Canon PowerShot G16 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
Casio EX-ZR15 and Canon G16'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.