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 Panasonic SZ3 and Canon A3400 IS side-by-side from the front, back and top in their relative dimensions. Panasonic SZ3 has external dimensions of 95 x 56 x 22 mm (3.74 x 2.2 x 0.87″) and weighs 126 g (0.28 lb / 4.44 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 the Panasonic SZ3 and the Canon A3400 IS. Panasonic SZ3 has the same height with Canon A3400 IS. On the other hand, with a width of 95mm, it is 1 wider and also with a thickness of 22mm, it is 1mm thicker than Canon A3400 IS.
Here is the back view size comparison of the Panasonic SZ3 and Canon A3400 IS.
Now lets look at the top view comparison of Panasonic SZ3 and Canon A3400 IS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic SZ3 and Canon A3400 IS have exactly the same weight of 126g.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-SZ3 nor Canon PowerShot A3400 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
LCD Screen Size and Features
Canon A3400 IS's 3.00" LCD screen is slightly larger than Panasonic SZ3's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.