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 ZS100 and Panasonic ZS200 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS100 has external dimensions of 111 x 65 x 44 mm (4.37 x 2.56 x 1.73″) and weighs 312 g (0.69 lb / 11.01 oz) (including batteries). Panasonic ZS200 has external dimensions of 111 x 66 x 45 mm (4.37 x 2.6 x 1.77″) and weighs 340 g (0.75 lb / 11.99 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS100 and Panasonic ZS200. Panasonic ZS100 has the same height with Panasonic ZS200. On the other hand, with a width of 65mm, it is 1 narrower and also with a thickness of 44mm, it is 1mm thinner than Panasonic ZS200.
Here is the back view size comparison of Panasonic ZS100 and Panasonic ZS200.
Now lets look at the top view comparison of Panasonic ZS100 and Panasonic ZS200.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic ZS100 is 28g lighter than the Panasonic ZS200 but we don't think this will make a significant difference.
Unfortunately neither Panasonic Lumix DMC-ZS100 (Lumix DMC-TZ100) nor Panasonic Lumix DC-ZS200 (Lumix DC-TZ200) 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 ZS100 and Panasonic ZS200's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.