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Nikon D3100 User Manual

Nikon D3100
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Adjust Viewfinder Focus
The camera is equipped with diopter adjustment to accommodate individual
differences in vision.
Check that the display in the viewfinder is in focus before
framing pictures in the viewfinder.
1 Remove the lens cap.
2 Turn the camera on.
3 Focus the viewfinder.
Rotate the diopter adjustment control until the
viewfinder display and focus point are in sharp
focus.
When operating the control with your eye
to the viewfinder, be careful not to put your
fingers or fingernails in your eye.
A Adjusting Viewfinder Focus
If you are unable to focus the viewfinder as described above, select single-servo autofocus
(AF-S; 0 55), single-point AF (c; 0 58), and the center focus point (0 60), and then frame a
high-contrast subject in the center focus point and press the shutter-release button halfway
to focus the camera.
With the camera in focus, use the diopter adjustment control to bring
the subject into clear focus in the viewfinder.
If necessary, viewfinder focus can be further
adjusted using optional corrective lenses (0 176).
Focus point

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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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