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 Panasonic ZS45 and Samsung WB850F 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). Samsung WB850F has external dimensions of and weighs 250 g (0.55 lb / 8.82 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS45 and Samsung WB850F. Panasonic ZS45 is 1mm narrower and 2mm shorter than Samsung WB850F but it is also 7mm thicker.
Here is the back view size comparison of Panasonic ZS45 and Samsung WB850F.
Now lets look at the top view comparison of Panasonic ZS45 and Samsung WB850F.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS45 is 1g lighter than the Samsung WB850F but we don't think this will make a significant difference.
Unfortunately neither Panasonic Lumix DMC-ZS45 (Lumix DMC-TZ57) nor Samsung WB850F 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 ZS45 and Samsung WB850F's LCD screens has the same diagonal size of 3".
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 Samsung WB850F has a fixed type screen which provides less flexibility in shooting positions compared to ZS45.