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 Samsung ST90 and Canon SX30 IS side-by-side from the front, back and top in their relative dimensions. Samsung ST90 has external dimensions of 92 x 53 x 17 mm (3.62 x 2.09 x 0.67″) and weighs (including batteries). 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).
Below you can see the front-view size comparison of the Samsung ST90 and the Canon SX30 IS. Samsung ST90 is clearly the smaller of the two cameras. Its body is 31mm narrower, 39mm shorter and 91mm thinner than Canon SX30 IS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Samsung ST90 is 601g lighter than the Canon SX30 IS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Samsung ST90 nor Canon PowerShot SX30 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
Samsung ST90's 3.00" LCD screen is slightly larger than Canon SX30 IS's 2.7" screen.