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 FP7 and Panasonic ZS8 side-by-side from the front, back and top in their relative dimensions. Panasonic FP7 has external dimensions of 101 x 59 x 18 mm (3.98 x 2.32 x 0.71″) and weighs 147 g (0.32 lb / 5.19 oz) (including batteries). Panasonic ZS8 has external dimensions of 105 x 58 x 33 mm (4.13 x 2.28 x 1.3″) and weighs 210 g (0.46 lb / 7.41 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic FP7 and the Panasonic ZS8. Panasonic FP7 is 4mm narrower and 15mm thinner than Panasonic ZS8 but it is also 1mm taller.
Here is the back view size comparison of the Panasonic FP7 and Panasonic ZS8.
Now lets look at the top view comparison of Panasonic FP7 and Panasonic ZS8.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic FP7 is significantly lighter (63g ) than the Panasonic ZS8 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-FP7 nor Panasonic Lumix DMC-ZS8 (Lumix DMC-TZ18) 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 FP7's 3.50" LCD screen is slightly larger than Panasonic ZS8's 3" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.