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 Sony WX500 and Panasonic ZS40 side-by-side from the front, back and top in their relative dimensions. Sony WX500 has external dimensions of 102 x 58 x 36 mm (4.02 x 2.28 x 1.42″) and weighs 236 g (0.52 lb / 8.32 oz) (including batteries). Panasonic ZS40 has external dimensions of 111 x 64 x 34 mm (4.37 x 2.52 x 1.34″) and weighs 240 g (0.53 lb / 8.47 oz) (including batteries).
Below you can see the front view size comparison of Sony WX500 and Panasonic ZS40. Sony WX500 is 9mm narrower and 6mm shorter than Panasonic ZS40 but it is also 2mm thicker.
Here is the back view size comparison of Sony WX500 and Panasonic ZS40.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony WX500 is 4g lighter than the Panasonic ZS40 but we don't think this will make a significant difference.
Unfortunately neither Sony Cyber-shot DSC-WX500 nor Panasonic Lumix DMC-ZS40 (Lumix DMC-TZ60) 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Sony WX500 and Panasonic ZS40's LCD screens has the same diagonal size of 3".
On the other hand, Sony WX500 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 ZS40 has a fixed type screen which provides less flexibility in shooting positions compared to WX500.