Nikon D5100 User Manual

69
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Autoexposure Lock
Use autoexposure lock to recompose photographs after using M (Center-weighted
metering) and N (Spot metering) to meter exposure; note that autoexposure lock is
not available in i or j mode.
1 Meter exposure.
Position the subject in the center of the frame
(center-weighted metering) or the selected
focus point (spot metering) and press the
shutter-release button halfway to set focus and
meter exposure.
Check that the in-focus
indicator (I) appears in the viewfinder.
2 Lock exposure.
With the shutter-release button pressed halfway and the
subject positioned in the focus point, press the AE-L/AF-L
button to lock exposure.
While exposure lock is in effect, an AE-L indicator will
appear in the viewfinder.
3 Recompose the photograph.
Keeping the AE-L/AF-L button pressed, recompose
the photograph and shoot.
A Autoexposure Lock
If On is selected for Custom Setting c1 (Shutter-release
button AE-L; 0 159), exposure will lock when the shutter-
release button is pressed halfway.
For information on
changing the role of the AE-L/AF-L button, see Custom Setting f2
(Assign AE-L/AF-L button; 0 166).
A Adjusting Shutter Speed and Aperture
While exposure lock is in effect, the following settings can be adjusted without altering the
metered value for exposure:
Mode Setting
Programmed auto Shutter speed and aperture (flexible program; 0 62)
Shutter-priority auto Shutter speed
Aperture-priority auto Aperture
The metering method itself can not be changed while exposure lock is in effect.
Shutter-release
button
AE-L/AF-L button

Nikon D5100 Specifications

General

Megapixel	16.2 MP
Camera type	SLR Camera Body
Sensor type	CMOS
Image stabilizer	Yes
Total megapixels	16.9 MP
Image sensor size	- \
Image formats supported	JPG
Maximum image resolution	4928 x 3264 pixels
Still image resolution(s)	640 x 424, 1280 x 720, 1920 x 1080
Optical zoom	- x
Focal length range	- mm
Aperture range (F-F)	-
Camera shutter speed	1 - 1/4000 s
Focus adjustment	Auto
ISO sensitivity	100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, 2000, 2250, 3200, 6400
Flash modes	Auto, Red-eye reduction, Slow synchronization
Scene modes	Beach, Candlelight, Dawn, Dusk, Night, Night landscape, Night portrait, Party (indoor), Portrait, Snow, Sports, Sunset, Landscape (scenery)
White balance	Auto, Cloudy, Fluorescent, Incandescent, Shade
Self-timer delay	2, 5, 10, 20 s
Maximum video resolution	1920 x 1080 pixels
Internal memory	- MB
Compatible memory cards	SD, SDHC, SDXC
Display diagonal	3 \
Display resolution (numeric)	921000 pixels
USB version	2.0
Product color	Black
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	0 - 85 %

Weight and Dimensions

Depth	79 mm
Width	128 mm
Height	97 mm
Weight	560 g