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what f/stop has been set. For a D7000 owner, this means that older manual focus
lenses (including pre-1977 lenses that have been converted to this system) can be
used for automatic metering with the Aperture-priority exposure mode, and for
manual metering in Manual exposure mode.
■ Autofocus drive screw slot. (Not shown in the figure.) As you’ll learn in Chapter
11, older autofocus lenses (given the AF designation in Nikon nomenclature) lack
an internal autofocus motor. Focus is set using a screw drive built into the camera
body of every Nikon autofocus camera (film or digital) except (at the time I write
this) the Nikon D40/D40x, D60, D3000, D3100, D5000, and D5100. Lenses
given the AF-S designation lack this connection, because autofocus is achieved inter-
nally using a tiny motor.
Looking Inside the Viewfinder
Much of the important shooting status information is shown inside the viewfinder of
the Nikon D7000. As with the status LCD up on top, not all of this information will
be shown at any one time. Figure 3.34 shows what you can expect to see. These read-
outs include:
■ Alignment grid. This optional grid (it can be turned on and off in the Custom
Settings menu option CSM #d2) can be useful when aligning horizontal or verti-
cal shapes as you compose your image.
■ Focus points. Can display the 39 areas used by the D7000 to focus. The camera
can select the appropriate focus zone for you, or you can manually select one or all
of the zones.
■ Active focus point. The currently selected focus point can be highlighted with red
illumination, depending on focus mode.
■ AF area bracket. Shows the area covered by the autofocus sensors.
■ No card warning indicator. Appears when the D7000 doesn’t have a memory card
installed in either slot. If you find this warning distracting, you can turn it, and the
two described next, off with CSM #d4.
■ Black-and-white mode warning indicator. Reminder that you’re shooting JPEGs
in monochrome mode.
■ Low battery warning indicator. Appears when the D7000’s battery becomes
depleted.
■ Focus indicator. This green dot stops blinking when the subject covered by the
active autofocus zone is in sharp focus, whether focus was achieved by the AF sys-
tem, or by you using manual focusing. Left and right arrows show whether focus
is set ahead of or behind the subject.
David Busch’s Nikon D7000 Guide to Digital SLR Photography86