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 Canon SX400 IS and Canon SX420 IS side-by-side from the front, back and top in their relative dimensions. Canon SX400 IS has external dimensions of 104 x 69 x 80 mm (4.09 x 2.72 x 3.15″) and weighs 313 g (0.69 lb / 11.04 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 Canon SX400 IS and the Canon SX420 IS. Canon SX400 IS has the same height and width with Canon SX420 IS. On the other hand, with a thickness of 80mm, it is 5mm thinner.
Comparison image of the Canon SX400 IS and the Canon SX420 IS Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Canon SX400 IS and Canon SX420 IS.
Comparison image of the Canon SX400 IS and the Canon SX420 IS Size and Weight - Back View
Now lets look at the top view comparison of Canon SX400 IS and Canon SX420 IS.
Top View Comparison image of the Canon SX400 IS and the Canon SX420 IS Size
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon SX400 IS is 12g lighter than the Canon SX420 IS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Canon PowerShot SX400 IS 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
Canon SX400 IS 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.
