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 Nikon S4100 and Canon SX30 IS side-by-side from the front, back and top in their relative dimensions. Nikon S4100 has external dimensions of 95 x 57 x 20 mm (3.74 x 2.24 x 0.79″) 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 Nikon S4100 and the Canon SX30 IS. Nikon S4100 is clearly the smaller of the two cameras. Its body is 28mm narrower, 35mm shorter and 88mm 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.
Nikon S4100 is 601g lighter than the Canon SX30 IS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Nikon Coolpix S4100 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
Nikon S4100's 3.00" LCD screen is slightly larger than Canon SX30 IS's 2.7" screen.