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 W530 and Panasonic ZS8 side-by-side from the front, back and top in their relative dimensions. Sony W530 has external dimensions of 93 x 53 x 19 mm (3.66 x 2.09 x 0.75″) and weighs 113 g (0.25 lb / 3.99 oz) (including batteries). Panasonic ZS8 has external dimensions of 105 x 58 x 33 mm (4.13 x 2.28 x 1.3″) and weighs 210 g (0.46 lb / 7.41 oz) (including batteries).
Below you can see the front view size comparison of Sony W530 and Panasonic ZS8. Sony W530 is clearly the smaller of the two cameras. Its body is 12mm narrower, 5mm shorter and 14mm thinner than Panasonic ZS8.
Here is the back view size comparison of Sony W530 and Panasonic ZS8.
Now lets look at the top view comparison of Sony W530 and Panasonic ZS8.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony W530 is significantly lighter (97g ) than the Panasonic ZS8 which may become a big advantage especially on long walking trips.
Unfortunately neither Sony Cyber-shot DSC-W530 nor Panasonic Lumix DMC-ZS8 (Lumix DMC-TZ18) 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
Panasonic ZS8's 3" LCD screen is slightly larger than Sony W530's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.