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 FH1 and Panasonic FH3 side-by-side from the front, back and top in their relative dimensions. Panasonic FH1 has external dimensions of 98 x 55 x 23 mm (3.86 x 2.17 x 0.91″) and weighs 163 g (0.36 lb / 5.75 oz) (including batteries). Panasonic FH3 has external dimensions of 98 x 55 x 24 mm (3.86 x 2.17 x 0.94″) and weighs 165 g (0.36 lb / 5.82 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic FH1 and the Panasonic FH3. Panasonic FH1 has the same height and width with Panasonic FH3. On the other hand, with a thickness of 23mm, it is 1mm thinner.
Here is the back view size comparison of the Panasonic FH1 and Panasonic FH3.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic FH1 is 2g lighter than the Panasonic FH3 but we don't think this will make a significant difference.
Weather Sealing
Unfortunately neither the Panasonic Lumix DMC-FH1 (Lumix DMC-FS10) nor Panasonic Lumix DMC-FH3 (Lumix DMC-FS11) 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 FH1 and Panasonic FH3'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.