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 Casio EX-ZR100 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). Casio EX-ZR100 has external dimensions of 105 x 59 x 29 mm (4.13 x 2.32 x 1.14″) and weighs 204 g (0.45 lb / 7.20 oz) (including batteries).
Below you can see the front view size comparison of Panasonic FX48 and Casio EX-ZR100. Panasonic FX48 is clearly the smaller of the two cameras. Its body is 10mm narrower, 6mm shorter and 7mm thinner than Casio EX-ZR100.
Here is the back view size comparison of Panasonic FX48 and Casio EX-ZR100.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic FX48 is significantly lighter (54g ) than the Casio EX-ZR100 which may become a big advantage especially on long walking trips.
Unfortunately neither Panasonic Lumix DMC-FX48 (Lumix DMC-FX40) nor Casio Exilim EX-ZR100 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
Casio EX-ZR100's 3" 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.