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 Sony W310 and Panasonic FH1 side-by-side from the front, back and top in their relative dimensions. Sony W310 has external dimensions of 95 x 55 x 19 mm (3.74 x 2.17 x 0.75″) and weighs 137 g (0.30 lb / 4.83 oz) (including batteries). 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).
Below you can see the front-view size comparison of the Sony W310 and the Panasonic FH1. Sony W310 is 3mm narrower and 4mm thinner than Sony W310 but they have the same height of 55mm.
Here is the back view size comparison of the Sony W310 and Panasonic FH1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sony W310 is significantly lighter (26g ) than the Panasonic FH1 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Sony Cyber-shot DSC-W310 nor Panasonic Lumix DMC-FH1 (Lumix DMC-FS10) 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
Sony W310 and Panasonic FH1'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.