Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Panasonic FX48 and Canon A3100 IS side-by-side from the front, back and top in their relative dimensions. Panasonic FX48 has external dimensions of 95 x 53 x 22 mm (3.74 x 2.09 x 0.87″) and weighs 150 g (0.33 lb / 5.29 oz) (including batteries). Canon A3100 IS has external dimensions of 97 x 58 x 28 mm (3.82 x 2.28 x 1.1″) and weighs 165 g (0.36 lb / 5.82 oz) (including batteries).
Below you can see the front view size comparison of Panasonic FX48 and Canon A3100 IS. Panasonic FX48 is clearly the smaller of the two cameras. Its body is 2mm narrower, 5mm shorter and 6mm thinner than Canon A3100 IS.
Here is the back view size comparison of Panasonic FX48 and Canon A3100 IS.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic FX48 is 15g lighter than the Canon A3100 IS but we don't think this will make a significant difference.
Unfortunately neither Panasonic Lumix DMC-FX48 (Lumix DMC-FX40) nor Canon PowerShot A3100 IS provides any type of weather sealing in their body, 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
Canon A3100 IS's 2.7" LCD screen is slightly larger than Panasonic FX48's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.