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 Olympus TG-3 and Pentax Efina side-by-side from the front, back and top in their relative dimensions. Olympus TG-3 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). Pentax Efina has external dimensions of 87 x 54 x 21 mm (3.43 x 2.13 x 0.83″) and weighs 91 g (0.20 lb / 3.21 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus TG-3 and the Pentax Efina. Pentax Efina is clearly the smaller of the two cameras. Its body is 25mm narrower, 12mm shorter and 10mm thinner than Olympus TG-3.
Here is the back view size comparison of the Olympus TG-3 and Pentax Efina.
Now lets look at the top view comparison of Olympus TG-3 and Pentax Efina.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax Efina is significantly lighter (156g ) than the Olympus TG-3 which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the TG-3, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the Efina.
LCD Screen Size and Features
Olympus TG-3's 3.00" LCD screen is slightly larger than Pentax Efina's 2.5" screen.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.