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 WG-10 and Canon SD4000 IS side-by-side from the front, back and top in their relative dimensions. Pentax WG-10 has external dimensions of and weighs 167 g (including batteries). Canon SD4000 IS has external dimensions of 100 x 54 x 23 mm (3.94 x 2.13 x 0.91″) and weighs 175 g (0.39 lb / 6.17 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax WG-10 and the Canon SD4000 IS. Canon SD4000 IS is clearly the smaller of the two cameras. Its body is 16mm narrower, 5mm shorter and 6mm thinner than Pentax WG-10.
Here is the back view size comparison of the Pentax WG-10 and Canon SD4000 IS.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax WG-10 is 8g lighter than the Canon SD4000 IS but we don't think this will make a significant difference.
Weather Sealing
Thanks to the weather-sealed body of the WG-10, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the SD4000 IS.
LCD Screen Size and Features
Canon SD4000 IS's 3.00" LCD screen is slightly larger than Pentax WG-10's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.