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 Casio EX-Z450 and Casio EX-FC150 side-by-side from the front, back and top in their relative dimensions. Casio EX-Z450 has external dimensions of 81 x 56 x 21 mm (3.19 x 2.2 x 0.83″) and weighs 128 g (0.28 lb / 4.52 oz) (including batteries). Casio EX-FC150 has external dimensions of 99 x 58 x 28 mm (3.9 x 2.28 x 1.1″) and weighs 173 g (0.38 lb / 6.10 oz) (including batteries).
Below you can see the front view size comparison of Casio EX-Z450 and Casio EX-FC150. Casio EX-Z450 is clearly the smaller of the two cameras. Its body is 18mm narrower, 2mm shorter and 7mm thinner than Casio EX-FC150.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Casio EX-Z450 is significantly lighter (45g ) than the Casio EX-FC150 which may become a big advantage especially on long walking trips.
Unfortunately neither Casio Exilim EX-Z450 nor Casio Exilim EX-FC150 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-Z450's 3" LCD screen is slightly larger than Casio EX-FC150's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.