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 SX540 HS and Canon SX620 HS side-by-side from the front, back and top in their relative dimensions. Canon SX540 HS has external dimensions of 120 x 82 x 92 mm (4.72 x 3.23 x 3.62″) and weighs 442 g (0.97 lb / 15.59 oz) (including batteries). 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).
Below you can see the front view size comparison of Canon SX540 HS and Canon SX620 HS. Canon SX620 HS is clearly the smaller of the two cameras. Its body is 23mm narrower, 25mm shorter and 64mm thinner than Canon SX540 HS.
Here is the back view size comparison of Canon SX540 HS and Canon SX620 HS.
Now lets look at the top view comparison of Canon SX540 HS and Canon SX620 HS.
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 (260g ) than the Canon SX540 HS which may become a big advantage especially on long walking trips.
Unfortunately neither Canon PowerShot SX540 HS nor Canon PowerShot SX620 HS 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 Bridge Cameras with Weather Sealing Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Canon SX540 HS and Canon SX620 HS's LCD screens has the same diagonal size of 3.00".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.