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Nikon D3100 Reference Manual

Nikon D3100
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61
z
2 Lock focus.
AF-A and AF-C focus modes: With the shutter-release
button pressed halfway (q), press the AE-L/AF-L
button (w) to lock both focus and exposure (an
AE-L icon will be displayed in the viewfinder;
0 80).
Focus will remain locked while the AE-L/AF-
L button is pressed, even if you later remove your
finger from the shutter-release button.
AF-S focus mode: Focus will lock automatically when the in-focus indicator
appears, and remain locked until you remove your finger from the shutter-
release button.
Focus can also be locked by pressing the AE-L/AF-L button (see
above).
3 Recompose the photograph and shoot.
Focus will remain locked between shots if you
keep the shutter-release button pressed halfway
(AF-S) or keep the AE-L/AF-L button pressed,
allowing several photographs in succession to
be taken at the same focus setting.
Do not change the distance between the camera and the subject while focus lock is
in effect.
If the subject moves, focus again at the new distance.
A The AE-L/AF-L Button
The Buttons > AE-L/AF-L button option in the setup menu (0 146) controls the behavior of
the AE-L/AF-L button.
Shutter-release button
AE-L/AF-L button

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Nikon D3100 Specifications

General IconGeneral
Megapixel14.2 MP
Camera typeSLR Camera Body
Sensor typeCMOS
Image stabilizerNo
Image sensor size- \
Maximum image resolution4608 x 3072 pixels
Image sensor size (W x H)23.1 x 15.4 mm
Still image resolution(s)-
Digital zoom- x
Focal length range- mm
InterfaceUSB
Digital SLRYes
Power source typeBattery
Dimensions (WxDxH)124 x 96 x 74.5 mm
Camera shutter speed1/4000 - 30 s
Effective sensor resolution14800000 pixels
Auto focusing (AF) modesSingle Auto Focus
ISO sensitivity100, 200, 400, 800, 1600, 3200, Auto
Light exposure modesaperture priority AE, auto, manual, shutter priority AE
Flash modesAuto, Flash off, Red-eye reduction, Slow synchronization
Internal memory- MB
Compatible memory cardsSD, SDHC, SDXC
Motion JPEG frame rate30 fps
Maximum video resolution1920 x 1080 pixels
Field of view95 %
Display diagonal3 \
Display resolution (numeric)230000 pixels
Magnification0.8 x
USB version2.0
Scene modesChildren, Close-up (macro), Portrait
Photo effectsBlack&White
White balanceAuto, Manual
Self-timer delay10 s
Product colorBlack
Fastest camera shutter speed1/4000 s
Slowest camera shutter speed30 s
Weight and Dimensions IconWeight and Dimensions
Depth96 mm
Width124 mm
Height74.5 mm
Weight505 g

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