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Diopter adjustment control. Just to the right of the viewfi nder (almost hidden
▶
behind the eyecup) is the diopter adjustment control. Use this control to adjust
the viewfi nder lens to suit your individual vision strength (not everyone's eye-
sight is the same). To adjust this control, look through the viewfi nder at the
menu bar and slide the diopter adjustment up or down until it appears sharp.
AE-L/AF-L button (
▶
lock the Autoexposure (AE) and Autofocus (AF). You can customize this button
in the Custom Setting Menu (
Lock (hold), AF Lock only, or AF-ON. AE Lock (hold) locks the exposure with one
press of the shutter-release button; the exposure is locked until you press the
button again or the shutter is released. AF-ON engages the AF in the same way
that half-pressing the shutter-release button does. You can also set the button to
FV lock when using an accessory Speedlight.
Main Command dial. You use this dial to change a variety of settings, depend-
▶
ing on which button you are using in conjunction with it. By default, it is used to
change the shutter speed when the camera is in Shutter-priority auto ( ),
Programmed auto ( ), and Manual exposure ( ) mode. It is also used to adjust
exposure compensation and change the fl ash mode.
Multi-selector. The multi-selector is another button that serves a few different
▶
purposes. In Playback mode, you use it to scroll through the photographs you've
taken, and you can also use it to view image information such as histograms and
shooting settings. When the D7100 is in Single-point AF (
AF (
) mode, you can use the multi-selector to change the active focus point.
You can also use the multi-selector to navigate through the menu options.
OK button (
). When the D7100 is in Menu mode, you press the OK button
▶
(
) to select the menu item that is highlighted. In Playback mode, pressing the
OK button (
) displays the Retouch Menu (
can set the OK button (
Setting menu (
you can disable the OK button (
▶
Focus selector lock. This switch, located concentric to the multi-selector, locks
the focus point so that it cannot be moved with the multi-selector.
Live View button. Simply pressing the Live View button (
▶
View option.
Chapter 1
Exploring the Nikon D7100
). The Auto-Exposure/Autofocus Lock button is used to
) f5 to provide AE/AF Lock, AE Lock only, AE
) to a couple of different functions using the Custom
) f1, Select center focus point, Highlight active focus point, or
) by selecting Not used.
) or Dynamic-area
) options. In Shooting mode, you
) activates the Live
1
7
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