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 W90 and Olympus TG-4 side-by-side from the front, back and top in their relative dimensions. Pentax W90 has external dimensions of 108 x 59 x 25 mm (4.25 x 2.32 x 0.98″) and weighs 164 g (0.36 lb / 5.78 oz) (including batteries). Olympus TG-4 has external dimensions of 112 x 66 x 31 mm (4.41 x 2.6 x 1.22″) and weighs 247 g (0.54 lb / 8.71 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax W90 and the Olympus TG-4. Pentax W90 is clearly the smaller of the two cameras. Its body is 4mm narrower, 7mm shorter and 6mm thinner than Olympus TG-4.
Here is the back view size comparison of the Pentax W90 and Olympus TG-4.
Now lets look at the top view comparison of Pentax W90 and Olympus TG-4.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax W90 is significantly lighter (83g ) than the Olympus TG-4 which may become a big advantage especially on long walking trips.
Weather Sealing
LCD Screen Size and Features
Olympus TG-4's 3.00" LCD screen is slightly larger than Pentax W90's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.