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 Pentax VS20 and Panasonic LF1 side-by-side from the front, back and top in their relative dimensions. Pentax VS20 has external dimensions of 111 x 61 x 38 mm (4.37 x 2.4 x 1.5″) and weighs 235 g (0.52 lb / 8.29 oz) (including batteries). Panasonic LF1 has external dimensions of 103 x 62 x 28 mm (4.06 x 2.44 x 1.1″) and weighs 192 g (0.42 lb / 6.77 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax VS20 and the Panasonic LF1. Panasonic LF1 is 8mm narrower and 10mm thinner than Pentax VS20 but it is also 1mm taller.
Here is the back view size comparison of the Pentax VS20 and Panasonic LF1.
Now lets look at the top view comparison of Pentax VS20 and Panasonic LF1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Panasonic LF1 is significantly lighter (43g ) than the Pentax VS20 which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Pentax Optio VS20 nor Panasonic Lumix DMC-LF1 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
Pentax VS20 and Panasonic LF1's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.