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 Panasonic LZ40 and Sony H400 side-by-side from the front, back and top in their relative dimensions. Panasonic LZ40 has external dimensions of 126 x 87 x 94 mm (4.96 x 3.43 x 3.7″) and weighs 524 g (1.16 lb / 18.48 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 the Panasonic LZ40 and the Sony H400. Panasonic LZ40 is clearly the smaller of the two cameras. Its body is 4mm narrower, 8mm shorter and 28mm thinner than Sony H400.
Now lets look at the top view comparison of Panasonic LZ40 and Sony H400.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic LZ40 is significantly lighter (104g ) than the Sony H400 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-LZ40 nor Sony Cyber-shot DSC-H400 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
Panasonic LZ40 and Sony H400'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.