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 Pentax XG-1 and Panasonic FZ80 side-by-side from the front, back and top in their relative dimensions. Pentax XG-1 has external dimensions of 119 x 89 x 98 mm (4.69 x 3.5 x 3.84″) and weighs 567 g (1.25 lb / 20.00 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 Pentax XG-1 and the Panasonic FZ80. Pentax XG-1 is clearly the smaller of the two cameras. Its body is 11mm narrower, 5mm shorter and 21mm thinner than Panasonic FZ80.
Comparison image of the Pentax XG-1 and the Panasonic FZ80 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of the Pentax XG-1 and Panasonic FZ80.
Comparison image of the Pentax XG-1 and the Panasonic FZ80 Size and Weight - Back View
Now lets look at the top view comparison of Pentax XG-1 and Panasonic FZ80.
Top View Comparison image of the Pentax XG-1 and the Panasonic FZ80 Size
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax XG-1 is 49g lighter than the Panasonic FZ80 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Pentax XG-1 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 Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Pentax XG-1 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.