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 HX90V and Panasonic SZ8 side-by-side from the front, back and top in their relative dimensions. Sony HX90V has external dimensions of 102 x 58 x 36 mm (4.02 x 2.28 x 1.42″) and weighs 245 g (0.54 lb / 8.64 oz) (including batteries). Panasonic SZ8 has external dimensions of 100 x 60 x 27 mm (3.94 x 2.36 x 1.06″) and weighs 159 g (0.35 lb / 5.61 oz) (including batteries).
Below you can see the front view size comparison of Sony HX90V and Panasonic SZ8. Panasonic SZ8 is 2mm narrower and 9mm thinner than Sony HX90V but it is also 2mm taller.
Here is the back view size comparison of Sony HX90V and Panasonic SZ8.
Now lets look at the top view comparison of Sony HX90V and Panasonic SZ8.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic SZ8 is significantly lighter (86g ) than the Sony HX90V which may become a big advantage especially on long walking trips.
Unfortunately neither Sony Cyber-shot DSC-HX90V nor Panasonic Lumix DMC-SZ8 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 HX90V and Panasonic SZ8's LCD screens has the same diagonal size of 3".
On the other hand, Sony HX90V 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 SZ8 has a fixed type screen which provides less flexibility in shooting positions compared to HX90V.