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 FS12 and Panasonic FP1 side-by-side from the front, back and top in their relative dimensions. Panasonic FS12 has external dimensions of 97 x 55 x 22 mm (3.82 x 2.17 x 0.87″) and weighs 129 g (0.28 lb / 4.55 oz) (including batteries). Panasonic FP1 has external dimensions of 99 x 59 x 19 mm (3.9 x 2.32 x 0.75″) and weighs 151 g (0.33 lb / 5.33 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic FS12 and the Panasonic FP1. Panasonic FS12 is 2mm narrower and 4mm shorter than Panasonic FP1 but it is also 3mm thicker.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic FS12 is significantly lighter (22g ) than the Panasonic FP1 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-FS12 nor Panasonic Lumix DMC-FP1 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 FS12 and Panasonic FP1's LCD screens have the same diagonal size of 2.70 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.