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 SX20 IS and Sony W510 side-by-side from the front, back and top in their relative dimensions. Canon SX20 IS has external dimensions of 128 x 88 x 87 mm (5.04 x 3.46 x 3.43″) and weighs 600 g (1.32 lb / 21.16 oz) (including batteries). Sony W510 has external dimensions of 96 x 54 x 20 mm (3.78 x 2.13 x 0.79″) and weighs 119 g (0.26 lb / 4.20 oz) (including batteries).
Below you can see the front-view size comparison of the Canon SX20 IS and the Sony W510. Sony W510 is clearly the smaller of the two cameras. Its body is 32mm narrower, 34mm shorter and 67mm thinner than Canon SX20 IS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony W510 is significantly lighter (481g ) than the Canon SX20 IS which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Canon PowerShot SX20 IS nor Sony Cyber-shot DSC-W510 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 Bridge Cameras with Weather Sealing Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Sony W510's 2.70" LCD screen is slightly larger than Canon SX20 IS's 2.5" screen.
On the other hand, Canon SX20 IS sports a
Fully Articulated screen which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over-the-head levels, and especially very useful for shooting selfies and video. On the other hand, Sony W510 has a fixed type screen which provides almost no flexibility in shooting positions compared to SX20 IS.