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-870 and Sigma DP3 Merrill side-by-side from the front, back and top in their relative dimensions. Olympus TG-870 has external dimensions of 113 x 64 x 28 mm (4.45 x 2.52 x 1.1″) and weighs 221 g (0.49 lb / 7.80 oz) (including batteries). Sigma DP3 Merrill has external dimensions of 122 x 67 x 59 mm (4.8 x 2.64 x 2.32″) and weighs 330 g (0.73 lb / 11.64 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus TG-870 and the Sigma DP3 Merrill. Olympus TG-870 is clearly the smaller of the two cameras. Its body is 9mm narrower, 3mm shorter and 56mm thinner than Sigma DP3 Merrill.
Here is the back view size comparison of the Olympus TG-870 and Sigma DP3 Merrill.
Now lets look at the top view comparison of Olympus TG-870 and Sigma DP3 Merrill.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus TG-870 is significantly lighter (109g ) than the Sigma DP3 Merrill which may become a big advantage especially on long walking trips.
Weather Sealing
Thanks to the weather-sealed body of the TG-870, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the DP3 Merrill.
LCD Screen Size and Features
Olympus TG-870 and Sigma DP3 Merrill's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Olympus TG-870 features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels whereas the Sigma DP3 Merrill has a fixed type screen which provides less flexibility in shooting positions compared to TG-870.