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 ZS1 and FujiFilm JZ300 side-by-side from the front, back and top in their relative dimensions. Panasonic ZS1 has external dimensions of 103 x 60 x 33 mm (4.06 x 2.36 x 1.3″) and weighs 229 g (0.50 lb / 8.08 oz) (including batteries). FujiFilm JZ300 has external dimensions of 97 x 57 x 29 mm (3.82 x 2.24 x 1.14″) and weighs 168 g (0.37 lb / 5.93 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS1 and FujiFilm JZ300. FujiFilm JZ300 is clearly the smaller of the two cameras. Its body is 6mm narrower, 3mm shorter and 4mm thinner than Panasonic ZS1.
Comparison image of Panasonic ZS1 and FujiFilm JZ300 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Panasonic ZS1 and FujiFilm JZ300.
Comparison image of Panasonic ZS1 and FujiFilm JZ300 Size and Weight - Back View
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
FujiFilm JZ300 is significantly lighter (61g ) than the Panasonic ZS1 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither Panasonic Lumix DMC-ZS1 (Lumix DMC-TZ6) nor FujiFilm FinePix JZ300 (FinePix JZ305) 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 ZS1 and FujiFilm JZ300's LCD screens has the same diagonal size of 2.7".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.