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 SX620 HS and Olympus SH-3 side-by-side from the front, back and top in their relative dimensions. Canon SX620 HS has external dimensions of 97 x 57 x 28 mm (3.81 x 2.24 x 1.1″) and weighs 182 g (0.40 lb / 6.42 oz) (including batteries). 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).
Below you can see the front view size comparison of Canon SX620 HS and Olympus SH-3. Canon SX620 HS is clearly the smaller of the two cameras. Its body is 12mm narrower, 6mm shorter and 14mm thinner than Olympus SH-3.
Here is the back view size comparison of Canon SX620 HS and Olympus SH-3.
Now lets look at the top view comparison of Canon SX620 HS and Olympus SH-3.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon SX620 HS is significantly lighter (89g ) than the Olympus SH-3 which may become a big advantage especially on long walking trips.
Unfortunately neither Canon PowerShot SX620 HS nor Olympus Stylus SH-3 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
Canon SX620 HS and Olympus SH-3's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.