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 Sigma DP2 Merrill and Olympus E-M5 II side-by-side from the front, back and top in their relative dimensions. Sigma DP2 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). Olympus E-M5 II has external dimensions of 124 x 85 x 45 mm (4.88 x 3.35 x 1.77″) and weighs 469 g (1.03 lb / 16.54 oz) (including batteries).
Below you can see the front-view size comparison of the Sigma DP2 Merrill and the Olympus E-M5 II. Sigma DP2 Merrill is 2mm narrower and 18mm shorter than Olympus E-M5 II but it is also 14mm thicker. As you can tell, actually this is not a fair size comparison since Sigma DP2 Merrill has a built-in lens but Olympus E-M5 II doesn't. Once you put a lens on E-M5 Mark II, its thickness will increase significantly.
Here is the back view size comparison of the Sigma DP2 Merrill and Olympus E-M5 II.
Now lets look at the top view comparison of Sigma DP2 Merrill and Olympus E-M5 II.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Sigma DP2 Merrill is significantly lighter (139g ) than the Olympus E-M5 II which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on E-M5 Mark II, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the E-M5 Mark II, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the DP2 Merrill.
LCD Screen Size and Features
Sigma DP2 Merrill and Olympus E-M5 II's LCD screens have the same diagonal size of 3.00 inches.
On the other hand, Olympus E-M5 II sports a
Fully Articulated screen which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over-the-head levels, and especially very useful for shooting selfies and video. Sigma DP2 Merrill's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to E-M5 Mark II.