Nikon D5100 Reference Manual page 75

Autofocus Nikon Multi-CAM 1000 autofocus sensor module with TTL phase
detection, 11 focus points (including one cross-type sensor), and AF-
assist illuminator (range approx. 0.5-3 m/1 ft. 8 in.-9 ft. 10 in.)
• Autofocus (AF):Single-servo AF (AF-S);continuous-servo AF (AF-C);auto
AF-S/AF-C selection (AF-A);predictive focus tracking activated
automatically according to subject status
• Manual focus (MF): Electronic rangefinder can be used
Focus point Can be selected from 11 focus points
AF-areamode Single-point AF, dynamic-area AF, auto-area AF, 3D-tracking (11 points)
Fo(:u°s_i°ock_i°'°°°-:_! _ '°'_'°'°'°'-: Focus can be locked by pressing shutter-release button halfway (single-
servo AF) or by pressing AE-L/AF-Lbutton
Built4n flash _°, _, ._., _, _i, ?._,"#, _: Auto fla sh with auto pop-u p
P,S,A, M, _I: Manual pop-up with button release
GuideNumber Approx. 12/39, 13/43 with manual flash (m/ft, ISO 100, 20 °C/68 °F)
fla°shcoil°t°i;oJ °:'I • TTL:i-TTL balanced fill-flash and standard i-TTL flash for digital SLR
using 420-pixel RGB sensor are available with built-in flash and SB-900,
SB-800, SB-700, SB-600, or SB-400 (i-TTL balanced fill-flash is available
when matrix or center-weighted metering is selected)
• Auto aperture: Available with SB-9OO/SB-800 and CPU lens
• Non-TTL auto: Supported flash units include SB-900, SB-800, SB-8ODX,
SB-28DX, SB-28, SB-27, and SB-22S
• Distance-priority manual:Available with SB-900, SB-800, and SB-700
Flashmode Auto, auto with red-eye reduction, auto slow sync, auto slow sync with
red-eye reduction, fill-flash, red-eye reduction, slow sync, slow sync with
red-eye reduction, rear-curtain with slow sync, rear-curtain sync, off
Flashcompensation -3 - -I-1 EV in increments of 1/3 or 1/2 EV
Flash-readyindicator Lights when built-in flash or optional flash unit such as SB-900, SB-800,
SB-700, SB-600, or SB-400 is fully charged; blinks for 3 s after flash is fired
at full output
Accessory s hoe ISO 518 hot-shoe with sync and data contacts and safety lock
NikonCreativeLighting Advanced Wireless Lighting supported with SB-900, SB-800, or SB-700 as
System(CLS) a master flash, or SU-800 as commander; Flash Color Information
Communication supported with built-in flash and all CLS-compatible
flash units
Syncterminal AS-15 sync terminal adapter(available separately)
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