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 E90 and Olympus TG-6 side-by-side from the front, back and top in their relative dimensions. Pentax E90 has external dimensions of 102 x 59 x 25 mm (4.02 x 2.32 x 0.98″) and weighs 145 g (0.32 lb / 5.11 oz) (including batteries). Olympus TG-6 has external dimensions of 113 x 66 x 32 mm (4.45 x 2.6 x 1.26″) and weighs 253 g (0.56 lb / 8.92 oz) (including batteries).
Below you can see the front-view size comparison of the Pentax E90 and the Olympus TG-6. Pentax E90 is clearly the smaller of the two cameras. Its body is 11mm narrower, 7mm shorter and 7mm thinner than Olympus TG-6.
Here is the back view size comparison of the Pentax E90 and Olympus TG-6.
Now lets look at the top view comparison of Pentax E90 and Olympus TG-6.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax E90 is significantly lighter (108g ) than the Olympus TG-6 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the TG-6, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the E90.
LCD Screen Size and Features
Olympus TG-6's 3.00" LCD screen is slightly larger than Pentax E90's 2.7" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.