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 Olympus SZ-30MR and Canon A3400 IS side-by-side from the front, back and top in their relative dimensions. Olympus SZ-30MR has external dimensions of 106 x 69 x 40 mm (4.17 x 2.72 x 1.57″) and weighs 226 g (0.50 lb / 7.97 oz) (including batteries). Canon A3400 IS has external dimensions of 94 x 56 x 21 mm (3.7 x 2.2 x 0.83″) and weighs 126 g (0.28 lb / 4.44 oz) (including batteries).
Below you can see the front view size comparison of Olympus SZ-30MR and Canon A3400 IS. Canon A3400 IS is clearly the smaller of the two cameras. Its body is 12mm narrower, 13mm shorter and 19mm thinner than Olympus SZ-30MR.
Now lets look at the top view comparison of Olympus SZ-30MR and Canon A3400 IS.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon A3400 IS is significantly lighter (100g ) than the Olympus SZ-30MR which may become a big advantage especially on long walking trips.
Unfortunately neither Olympus SZ-30MR nor Canon PowerShot A3400 IS 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
Olympus SZ-30MR and Canon A3400 IS'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.