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 S570 and Canon A1100 IS side-by-side from the front, back and top in their relative dimensions. Nikon S570 has external dimensions of 92 x 57 x 22 mm (3.62 x 2.24 x 0.87″) and weighs 140 g (0.31 lb / 4.94 oz) (including batteries). Canon A1100 IS has external dimensions of 95 x 62 x 31 mm (3.74 x 2.44 x 1.22″) and weighs 150 g (0.33 lb / 5.29 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon S570 and the Canon A1100 IS. Nikon S570 is clearly the smaller of the two cameras. Its body is 3mm narrower, 5mm shorter and 9mm thinner than Canon A1100 IS.
Comparison image of the Nikon S570 and the Canon A1100 IS Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Nikon S570 and Canon A1100 IS.
Comparison image of the Nikon S570 and the Canon A1100 IS Size and Weight - Back View
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S570 is 10g lighter than the Canon A1100 IS but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Nikon Coolpix S570 nor Canon PowerShot A1100 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
LCD Screen Size and Features
Nikon S570's 2.70" LCD screen is slightly larger than Canon A1100 IS's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.