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 Casio EX-ZR300 and Panasonic FZ80 side-by-side from the front, back and top in their relative dimensions. Casio EX-ZR300 has external dimensions of 105 x 59 x 29 mm (4.13 x 2.32 x 1.14″) and weighs 205 g (0.45 lb / 7.23 oz) (including batteries). Panasonic FZ80 has external dimensions of 130 x 94 x 119 mm (5.12 x 3.7 x 4.69″) and weighs 616 g (1.36 lb / 21.73 oz) (including batteries).
Below you can see the front-view size comparison of the Casio EX-ZR300 and the Panasonic FZ80. Casio EX-ZR300 is clearly the smaller of the two cameras. Its body is 25mm narrower, 35mm shorter and 90mm thinner than Panasonic FZ80.
Here is the back view size comparison of the Casio EX-ZR300 and Panasonic FZ80.
Now lets look at the top view comparison of Casio EX-ZR300 and Panasonic FZ80.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Casio EX-ZR300 is significantly lighter (411g ) than the Panasonic FZ80 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Casio Exilim EX-ZR300 nor Panasonic Lumix DMC-FZ80 (Lumix DMC-FZ82) 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 Top Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Casio EX-ZR300 and Panasonic FZ80's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.