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 SX30 IS and Canon SX40 HS side-by-side from the front, back and top in their relative dimensions. Canon SX30 IS has external dimensions of 123 x 92 x 108 mm (4.84 x 3.62 x 4.25″) and weighs 601 g (1.32 lb / 21.20 oz) (including batteries). Canon SX40 HS has external dimensions of 123 x 92 x 108 mm (4.84 x 3.62 x 4.25″) and weighs 600 g (1.32 lb / 21.16 oz) (including batteries).
Below you can see the front-view size comparison of the Canon SX30 IS and the Canon SX40 HS. In this case, we can see that Canon SX30 IS and Canon SX40 HS have the exact same height, width and thickness.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon SX40 HS is 1g lighter than the Canon SX30 IS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Canon PowerShot SX30 IS nor Canon PowerShot SX40 HS 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
LCD Screen Size and Features
Canon SX30 IS and Canon SX40 HS's LCD screens have the same diagonal size of 2.70 inches.
Both cameras feature
Fully Articulating screens where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. Fully articulating screens are also useful for taking Selfies and video.