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 S6100 and Panasonic ZS30 side-by-side from the front, back and top in their relative dimensions. Nikon S6100 has external dimensions of 98 x 58 x 27 mm (3.86 x 2.28 x 1.06″) and weighs 175 g (0.39 lb / 6.17 oz) (including batteries). Panasonic ZS30 has external dimensions of 105 x 59 x 28 mm (4.13 x 2.32 x 1.1″) and weighs 198 g (0.44 lb / 6.98 oz) (including batteries).
Below you can see the front-view size comparison of the Nikon S6100 and the Panasonic ZS30. Nikon S6100 is clearly the smaller of the two cameras. Its body is 7mm narrower, 1mm shorter and 1mm thinner than Panasonic ZS30.
Here is the back view size comparison of the Nikon S6100 and Panasonic ZS30.
Now lets look at the top view comparison of Nikon S6100 and Panasonic ZS30.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Nikon S6100 is 23g lighter than the Panasonic ZS30 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Nikon Coolpix S6100 nor Panasonic Lumix DMC-ZS30 (Lumix DMC-TZ40) 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 S6100 and Panasonic ZS30'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.