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 HX400V 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 HX400V has external dimensions of 130 x 93 x 103 mm (5.1 x 3.67 x 4.06″) and weighs 660 g (1.46 lb / 23.28 oz) (including batteries).
Below you can see the front view size comparison of Panasonic FZ80 and Sony HX400V.
Here is the back view size comparison of Panasonic FZ80 and Sony HX400V.
Now lets look at the top view comparison of Panasonic FZ80 and Sony HX400V.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic FZ80 is 44g lighter than the Sony HX400V 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-HX400V 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 HX400V's LCD screens has the same diagonal size of 3".
On the other hand, Sony HX400V features a Tilting screen
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Panasonic FZ80 has a fixed type screen which provides less flexibility in shooting positions compared to HX400V.