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 Ricoh GR and Sigma DP2 Merrill side-by-side from the front, back and top in their relative dimensions. Ricoh GR has external dimensions of 117 x 61 x 35 mm (4.61 x 2.4 x 1.38″) and weighs 245 g (0.54 lb / 8.64 oz) (including batteries). 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).
Below you can see the front-view size comparison of the Ricoh GR and the Sigma DP2 Merrill. Ricoh GR is clearly the smaller of the two cameras. Its body is 5mm narrower, 6mm shorter and 24mm thinner than Sigma DP2 Merrill.
Here is the back view size comparison of the Ricoh GR and Sigma DP2 Merrill.
Now lets look at the top view comparison of Ricoh GR and Sigma DP2 Merrill.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Ricoh GR is significantly lighter (85g ) than the Sigma DP2 Merrill which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Ricoh GR nor Sigma DP2 Merrill provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Ricoh GR and Sigma DP2 Merrill's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.