Body Elements

Beneath the flash popup/mode button is a dedicated button for bracketing. You can set precisely what you want to bracket via the D7000's menu, but this button in collaboration with the twin control dials allows you to adjust how much and in what increments.

Next to this, on the camera's 'shoulder', is the receiver for the optional ML-L3 wireless infrared remote release.
Unlike the top-end D300S and full-frame D700/D3S/D3X, the D7000's AF mode switch does not have a dedicated position for 'C' - continuous AF. Instead, this can be set by pressing the small button at the center of the switch, and rotating the rear control dial.
A range of functions can be assigned to the D7000's Fn button, including amongst others, the electronic spirit level, grid line view, and one-touch NEF (RAW) recording.
This inconspicuous tab of black plastic is an Ai indexing tab, and is one of the small physical differences between the D7000 and D90 which distinguish the former as a definitively 'high-end' model. This tab allows aperture control with manual focus lenses of the Ai specification or later. Aperture data for up to 9 such lenses can be programmed into the D7000.
....and this little fella is a mechanical AF drive coupling, which means that unlike lower-end Nikon DSLRs, the D7000 can achieve AF with 'screw drive' AF-D and AF lenses that don't have their own in-built motors (not just AF-S and AF-I).
To the right of the D7000's removable rubber eyecup is a small knurled diopter adjustment ring.
Here you can see the view through the D7000's lens throat with the lens removed. The contacts ranged in a semi-circular arc just inside the throat carry AF, aperture and focal length information between camera and lens.
The D7000 features dual slots for SD/SDHC/SDXC memory cards. If two cards are installed, it is possible to set the secondary card as overflow storage, backup, or to store exclusively a single file type (e.g. RAW or movie files).
Beneath rubber doors on the left of the D7000 (when viewed from the rear) are the A/V out, USB, HDMI, microphone and combined GPS/remote release sockets. The latter accepts the same MC DC2 remote as the D3100 (and D90).