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 Olympus SH-3 and Canon G15 side-by-side from the front, back and top in their relative dimensions. Olympus SH-3 has external dimensions of 109 x 63 x 42 mm (4.29 x 2.48 x 1.65″) and weighs 271 g (0.60 lb / 9.56 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 Olympus SH-3 and the Canon G15. Canon G15 is 2mm narrower and 2mm thinner than Olympus SH-3 but it is also 13mm taller.
Here is the back view size comparison of the Olympus SH-3 and Canon G15.
Now lets look at the top view comparison of Olympus SH-3 and Canon G15.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus SH-3 is significantly lighter (81g ) than the Canon G15 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Olympus Stylus SH-3 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
Olympus SH-3 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.