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 ZS45 and Sony HX20V side-by-side from the front, back and top in their relative dimensions. Panasonic ZS45 has external dimensions of 108 x 60 x 32 mm (4.25 x 2.36 x 1.26″) and weighs 249 g (0.55 lb / 8.78 oz) (including batteries). Sony HX20V has external dimensions of 107 x 62 x 35 mm (4.21 x 2.44 x 1.38″) and weighs 254 g (0.56 lb / 8.96 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic ZS45 and the Sony HX20V. Panasonic ZS45 is 2mm shorter and 3mm thinner than Sony HX20V but it is also 1mm wider.
Here is the back view size comparison of the Panasonic ZS45 and Sony HX20V.
Now lets look at the top view comparison of Panasonic ZS45 and Sony HX20V.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS45 is 5g lighter than the Sony HX20V but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-ZS45 (Lumix DMC-TZ57) nor Sony Cyber-shot DSC-HX20V 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 Compact Cameras with Weather Sealing
LCD Screen Size and Features
Panasonic ZS45 and Sony HX20V's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Panasonic ZS45 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 Sony HX20V has a fixed type screen which provides less flexibility in shooting positions compared to ZS45.