Nikon D4s User Manual

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i-TTL Flash Control
When a CLS-compatible flash unit is set to TTL, the camera
automatically selects one of the following types of flash control:
i-TTL balanced fill-flash for digital SLR: Flash unit emits series of nearly invisible
preflashes (monitor preflashes) immediately before main flash.
Preflashes reflected from objects in all areas of frame are picked up by
RGB sensor with approximately 91K (91,000) pixels and are analyzed in
combination with range information from matrix metering system to
adjust flash output for natural balance between main subject and
ambient background lighting.
If type G, E, or D lens is used, distance
information is included when calculating flash output.
Precision of
calculation can be increased for non-CPU lenses by providing lens data
(focal length and maximum aperture; see 0 235).
Not available when
spot metering is used.
Standard i-TTL flash for digital SLR: Flash output adjusted to bring lighting in
frame to standard level; brightness of background is not taken into
account. Recommended for shots in which main subject is emphasized
at expense of background details, or when exposure compensation is
used. Standard i-TTL flash for digital SLR is activated automatically when
spot metering is selected.

Nikon D4s Specifications

General

Megapixel	16.2 MP
Camera type	SLR Camera Body
Sensor type	CMOS
Image stabilizer	No
Total megapixels	16.6 MP
Image sensor size	- \
Image formats supported	JPG, RAW, TIF
Maximum image resolution	4928 x 3280 pixels
Image sensor size (W x H)	36 x 23.9 mm
Still image resolution(s)	4928 x 3280, 3696 x 2456, 2464 x 1640, 3200 x 2128, 2400 x 1592, 1600 x 1064, 4096 x 3280, 3072 x 2456, 2048 x 1640, 4096 x 2720, 3072 x 2040, 2048 x 1360
Optical zoom	- x
Focal length range	- mm
Lens mount interface	Nikon F
Minimum aperture number	-
Auto focusing (AF) modes	Multi Point Auto Focus, Single Auto Focus, Tracking Auto Focus
ISO sensitivity	200, 25600
Light exposure modes	Aperture priority AE, Auto, Manual, Shutter priority AE
ISO sensitivity (max)	25600
ISO sensitivity (min)	200
Fastest camera shutter speed	1/8000 s
Slowest camera shutter speed	30 s
Flash modes	Red-eye reduction, Slow synchronization
Flash sync-speed	1/250 s
Flash exposure correction	-3EV - +1EV (1/3 EV step)
Video recording	Yes
Video resolutions	640 x 424, 1280 x 720, 1920 x 1080 pixels
Motion JPEG frame rate	60 fps
Video formats supported	H.264, MPEG4
Maximum video resolution	1920 x 1080 pixels
Audio formats supported	LPCM
Memory slots	2
Internal memory	- MB
Compatible memory cards	CF, XQD
Display diagonal	3.2 \
Display resolution (numeric)	921000 pixels
Magnification	0.70 x
Viewfinder type	Electronic
USB version	2.0
HDMI connector type	Mini
Ethernet LAN (RJ-45) ports	1
Scene modes	Portrait, Landscape (scenery)
Photo effects	Vivid
White balance	Auto, Cloudy, Flash, Fluorescent, Incandescent, Shade
Self-timer delay	2, 5, 10, 20 s
Camera file system	DCF 2.0, DPOF, Exif 2.3
Diopter adjustment (D-D)	-3 - 1
On Screen Display (OSD) languages	ARA, CHI (SIMPL), CHI (TR), CZE, DAN, DEU, DUT, ENG, ESP, FRE, ITA, JPN, KOR, NOR, POL, POR, RUM, RUS, SWE, THA, TUR, UKR
Power source type	Battery
Battery type	EN-EL18a
Product color	Black
Operating temperature (T-T)	0 - 40 °C
Cables included	AC, USB

Weight and Dimensions

Depth	90.5 mm
Width	160 mm
Height	156.5 mm
Weight	1180 g