Nikon D5100 User Manual page 28

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Auto Meter-Off
The viewfinder and information display will turn off if no operations are performed for about
8 seconds (auto meter-off ), reducing the drain on the battery. Press the shutter-release
button halfway to reactivate the display. The auto meter-off delay can be selected using
Custom Setting c2 (Auto off timers; 0 11).
Exposure meters on
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The Built-in Flash
s
If additional lighting is required for correct exposure in i mode, the
built-in flash will pop up automatically when the shutter-release
button is pressed halfway. If the flash is raised, photographs can only
be taken when the flash-ready indicator (M) is displayed. If the flash-
ready indicator is not displayed, the flash is charging; remove your
finger briefly from the shutter-release button and try again.
To save battery power when the flash is not in use, return it to its
closed position by pressing it gently downward till the latch clicks
into place.
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Using a Zoom Lens
Use the zoom ring to zoom in on the subject so that it fills a
larger area of the frame, or zoom out to increase the area
visible in the final photograph (select longer focal lengths
on the lens focal length scale to zoom in, shorter focal
lengths to zoom out).
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Image Sensor Cleaning
The camera vibrates the low-pass filter covering the image sensor to remove dust when the
camera is turned on or off.
20
8 s
Exposure meters off Exposure meters on
Zoom in
Zoom ring
Zoom out