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 Nikon S6500 and Panasonic ZS100 side-by-side from the front, back and top in their relative dimensions. Nikon S6500 has external dimensions of and weighs 250 g (0.55 lb / 8.82 oz) (including batteries). 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).
Below you can see the front-view size comparison of the Nikon S6500 and the Panasonic ZS100. Nikon S6500 is clearly the smaller of the two cameras. Its body is 16mm narrower, 7mm shorter and 18mm thinner than Panasonic ZS100.
Now lets look at the top view comparison of Nikon S6500 and Panasonic ZS100.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S6500 is significantly lighter (62g ) than the Panasonic ZS100 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Nikon Coolpix S6500 nor Panasonic Lumix DMC-ZS100 (Lumix DMC-TZ100) 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
Nikon S6500 and Panasonic ZS100's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.