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 Nikon L840 and Sony HX400V side-by-side from the front, back and top in their relative dimensions. Nikon L840 has external dimensions of 114 x 89 x 96 mm (4.49 x 3.5 x 3.78″) and weighs 538 g (1.19 lb / 18.98 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 Nikon L840 and Sony HX400V. Nikon L840 is clearly the smaller of the two cameras. Its body is 16mm narrower, 4mm shorter and 7mm thinner than Sony HX400V.
Here is the back view size comparison of Nikon L840 and Sony HX400V.
Now lets look at the top view comparison of Nikon L840 and Sony HX400V.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon L840 is significantly lighter (122g ) than the Sony HX400V which may become a big advantage especially on long walking trips.
Unfortunately neither Nikon Coolpix L840 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
Nikon L840 and Sony HX400V's LCD screens has the same diagonal size of 3".
Both cameras feature Tilting screens
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels.