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 Canon SX620 HS and Pentax WG-3 GPS side-by-side from the front, back and top in their relative dimensions. Canon SX620 HS has external dimensions of 97 x 57 x 28 mm (3.81 x 2.24 x 1.1″) and weighs 182 g (0.40 lb / 6.42 oz) (including batteries). Pentax WG-3 GPS has external dimensions of 125 x 64 x 33 mm (4.9 x 2.5 x 1.3″) and weighs 238 g (0.52 lb / 8.40 oz) (including batteries).
Below you can see the front view size comparison of Canon SX620 HS and Pentax WG-3 GPS. Canon SX620 HS is clearly the smaller of the two cameras. Its body is 28mm narrower, 7mm shorter and 5mm thinner than Pentax WG-3 GPS.
Here is the back view size comparison of Canon SX620 HS and Pentax WG-3 GPS.
Now lets look at the top view comparison of Canon SX620 HS and Pentax WG-3 GPS.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon SX620 HS is significantly lighter (56g ) than the Pentax WG-3 GPS which may become a big advantage especially on long walking trips.
LCD Screen Size and Features
Canon SX620 HS and Pentax WG-3 GPS's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.