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 Pentax WG-1 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). Pentax WG-1 has external dimensions of 114 x 58 x 28 mm (4.49 x 2.28 x 1.1″) and weighs 157 g (0.35 lb / 5.54 oz) (including batteries).
Below you can see the front view size comparison of Panasonic ZS1 and Pentax WG-1. Pentax WG-1 is 2mm shorter and 5mm thinner than Panasonic ZS1 but it is also 11mm wider.
Here is the back view size comparison of Panasonic ZS1 and Pentax WG-1.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Pentax WG-1 is significantly lighter (72g ) than the Panasonic ZS1 which may become a big advantage especially on long walking trips.
LCD Screen Size and Features
Panasonic ZS1 and Pentax WG-1'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.