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 ZS3 and Pentax WG-1 GPS side-by-side from the front, back and top in their relative dimensions. Panasonic ZS3 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). Pentax WG-1 GPS has external dimensions of 116 x 59 x 29 mm (4.55 x 2.3 x 1.12″) and weighs 167 g (0.37 lb / 5.89 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS3 and Pentax WG-1 GPS. Pentax WG-1 GPS is 1mm shorter and 4mm thinner than Panasonic ZS3 but it is also 13mm wider.
Here is the back view size comparison of Panasonic ZS3 and Pentax WG-1 GPS.
Now lets look at the top view comparison of Panasonic ZS3 and Pentax WG-1 GPS.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Pentax WG-1 GPS is significantly lighter (62g ) than the Panasonic ZS3 which may become a big advantage especially on long walking trips.
LCD Screen Size and Features
Panasonic ZS3's 3" LCD screen is slightly larger than Pentax WG-1 GPS's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.