Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Nikon D7000 and Sigma SD1 Merrill side-by-side from the front, back and top in their relative dimensions. Nikon D7000 has external dimensions of 132 x 105 x 77 mm (5.2 x 4.13 x 3.03″) and weighs 780 g (1.72 lb / 27.51 oz) (including batteries). Sigma SD1 Merrill has external dimensions of 146 x 113 x 80 mm (5.75 x 4.45 x 3.15″) and weighs 790 g (including batteries).
Below you can see the front view size comparison of Nikon D7000 and Sigma SD1 Merrill. Nikon D7000 is clearly the smaller of the two cameras. Its body is 14mm narrower, 8mm shorter and 3mm thinner than Sigma SD1 Merrill.
Now lets look at the top view comparison of Nikon D7000 and Sigma SD1 Merrill.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Nikon D7000 is 10g lighter than the Sigma SD1 Merrill but we don't think this will make a significant difference.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since both Nikon D7000 and Sigma SD1 Merrill have the same APS-C sized sensor, their lenses for a similar focal length and aperture will be similar in size and weight.
Both D7000 and SD1 Merrill have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Nikon D7000 and Sigma SD1 Merrill's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.