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 SX420 IS 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 SX420 IS has external dimensions of 104 x 69 x 85 mm (4.09 x 2.72 x 3.35″) and weighs 325 g (0.72 lb / 11.46 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus SH-3 and the Canon SX420 IS. Olympus SH-3 is 6mm shorter and 43mm thinner than Canon SX420 IS but it is also 5mm wider.
Here is the back view size comparison of the Olympus SH-3 and Canon SX420 IS.
Now lets look at the top view comparison of Olympus SH-3 and Canon SX420 IS.
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 (54g ) than the Canon SX420 IS which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Olympus Stylus SH-3 nor Canon PowerShot SX420 IS 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
Olympus SH-3 and Canon SX420 IS'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.