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-H20G and Canon G15 side-by-side from the front, back and top in their relative dimensions. Casio EX-H20G has external dimensions of 103 x 68 x 29 mm (4.06 x 2.68 x 1.14″) and weighs 216 g (0.48 lb / 7.62 oz) (including batteries). Canon G15 has external dimensions of 107 x 76 x 40 mm (4.21 x 2.99 x 1.57″) and weighs 352 g (0.78 lb / 12.42 oz) (including batteries).
Below you can see the front-view size comparison of the Casio EX-H20G and the Canon G15. Casio EX-H20G is clearly the smaller of the two cameras. Its body is 4mm narrower, 8mm shorter and 11mm thinner than Canon G15.
Here is the back view size comparison of the Casio EX-H20G and Canon G15.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-H20G is significantly lighter (136g ) than the Canon G15 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Casio Exilim EX-H20G nor Canon PowerShot G15 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-H20G and Canon G15'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.