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 FujiFilm JX300 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). FujiFilm JX300 has external dimensions of 94 x 56 x 24 mm (3.7 x 2.2 x 0.94″) and weighs 130 g (0.29 lb / 4.59 oz) (including batteries).
Below you can see the front view size comparison of Casio EX-Z450 and FujiFilm JX300. Casio EX-Z450 is 13mm narrower and 3mm thinner than Casio EX-Z450 but they have the same height of 56mm.
Here is the back view size comparison of Casio EX-Z450 and FujiFilm JX300.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Casio EX-Z450 is 2g lighter than the FujiFilm JX300 but we don't think this will make a significant difference.
Unfortunately neither Casio Exilim EX-Z450 nor FujiFilm FinePix JX300 (FinePix JX305) 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 FujiFilm JX300's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.