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 FZ80 and Sony H400 side-by-side from the front, back and top in their relative dimensions. 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). Sony H400 has external dimensions of 130 x 95 x 122 mm (5.1 x 3.74 x 4.81″) and weighs 628 g (1.38 lb / 22.15 oz) (including batteries).
Below you can see the front view size comparison of Panasonic FZ80 and Sony H400. Panasonic FZ80 has the same height with Sony H400. On the other hand, with a width of 94mm, it is 1 narrower and also with a thickness of 119mm, it is 3mm thinner than Sony H400.
Here is the back view size comparison of Panasonic FZ80 and Sony H400.
Now lets look at the top view comparison of Panasonic FZ80 and Sony H400.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic FZ80 is 12g lighter than the Sony H400 but we don't think this will make a significant difference.
Unfortunately neither Panasonic Lumix DMC-FZ80 (Lumix DMC-FZ82) nor Sony Cyber-shot DSC-H400 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 Bridge Cameras with Weather Sealing
LCD Screen Size and Features
Panasonic FZ80 and Sony H400's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.