Nikon COOLPIX P7100 Reference Manual page 52

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The Setup Menu
Zoom
Speed
Press the MENU button "_ V tab ([_13) "_ Zoom speed
Set the zoom operation speed. Slow down the zoom speed to minimize the
recording of the zoom operating noise during movie recording.
Description
During still picture shooting, operate the zoom at the Normal
speed. During rnovie recording, operate the zoom at a lower
speed than Normal to minimize the recording of the zoom
operating noise. During still picture shooting, rotating the zoom
control all the way in either direction adjusts the zoom quickly,
while rotating the control partially adjusts the zoom slowly.
During both still picture shooting and movie recording, operate
the zoom at the standard speed. During both still picture
Normal shooting and movie recording, rotating the zoom control all the
way in either direction adjusts the zoom quickly, while rotating
the control partially adjusts the zoom slowly.
During both still picture shooting and movie recording, operate
Quiet the zoom at a lower speed than Normal.
The icon for the current setting other than Auto is displayed on the monitor (_8).
Fixed Aperture
Press the MENU button "_ V tab ([_13) "_ Fixed aperture
Auto (default setting)
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