Nikon D90 User Manual

8 Raise the built-in flash.
Press the ~ button to raise the built-in flash. Note that even if - - is selected for
Built-in flash> Mode, the built-in flash must be raised so that monitor
preflashes will be emitted.
9 Frame the photograph, focus, and shoot.
After confirming that the camera flash-ready light and the flash-ready lights for
all other flash units are lit, frame the photograph, focus, and shoot.
FV lock (pg.
198)
can be used if desired.
~ Commander Mode
Position the sensor windows on the remote flash units to pick up the monitor preflashes from
the built-in flash (particular care is required when not using a tripod). Be sure that direct light
or strong reflections from the remote flash units
do not enter the camera lens (in TTL mode) or
the photocells on the remote flash units
(AA mode), as this may interfere with exposure. To
prevent timing flashes emitted by the built-in flash from appearing in photographs taken at
short range, choose
low 150 sensitivities or small apertures (large f-numbers) or use an
optional 5G-31R infrared panel for the built-in flash. An 5G-31R is required for best results with
rear-curtain sync, which produces brighter timing flashes. After positioning the remote flash
units, take a test shot and view the results in
the camera monitor.
Although there
is no limit on the number of remote flash units that may be used, the practical
maximum
is three. With more than this number, the light emitted bythe remote flash units will
interfere
with performance.
PI The Flash Mode Display
~ does not appear in the control panel flash mode display when - - is selected for Built-in
flash> Mode.
mFlash Compensation
The flash compensation value selected with the ~ (~) button and sub-command dial is added
to the flash compensation values selected for the built-in flash, group A, and group Bin the
Commander mode menu. A ~ icon is displayed in the control panel and viewfinder when a
flash compensation value other than
±O is selected for Built-in flash> TTL. The ~ icon
flashes when
M is selected for Built-in flash.
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Nikon D90 Specifications

General

Megapixel	12.3 MP
Camera type	SLR Camera Body
Sensor type	CMOS
Sensor format	DX
Image stabilizer	No
Total megapixels	12.9 MP
Image sensor size	- \
Image formats supported	JPG, RAW
Maximum image resolution	4288 x 2848 pixels
Image sensor size (W x H)	23.6 x 15.8 mm
Still image resolution(s)	4288 x 2848 3216 x 2136 2144 x 1424
Mounting type	Bayonet
Lens mount interface	Nikon F
Video recording	Yes
Video resolutions	320 x 216, 640 x 424, 1280 x 720 pixels
Motion JPEG frame rate	24 fps
Maximum video resolution	1280 x 720 pixels
Analog signal format system	NTSC
Display diagonal	3 \
Vari-angle LCD display	-
Display resolution (numeric)	920000 pixels
Magnification	0.94 x
Viewfinder type	Optical
Eye relief	19.5 mm
Scene modes	Close-up (macro), Night portrait, Portrait, Sports, Landscape (scenery)
Image editing	Trimming
Photo effects	Black&White, Neutral, Vivid
White balance	Auto, Cloudy, Flash, Fluorescent, Incandescent, Manual, Sunny
Playback modes	Zoom
Camera playback	Highlights, Movie, Single image, Slide show, Thumbnails
Self-timer delay	2, 5, 10, 20 s
Camera file system	DCF 2.0, DPOF, Exif 2.21
Product color	Black
Flash modes	High-speed synchronization
Flash sync-speed	1/200 s
Flash range (wide)	- m
Memory slots	1
Compatible memory cards	SD, SDHC
Light metering	Centre-weighted, Matrix, Spot
ISO sensitivity	100, 200, 3200, 6400
Light exposure modes	Aperture priority AE, Auto, Manual, Shutter priority AE
ISO sensitivity (max)	6400
ISO sensitivity (min)	100
Light exposure correction	±5EV (1/2; 1/3 EV step)
Auto Focus (AF) points	11
Auto focusing (AF) modes	Servo Auto Focus, Single Auto Focus
Camera shutter type	Electronic
Fastest camera shutter speed	1/4000 s
Slowest camera shutter speed	30 s
USB version	2.0
Power source type	Battery
Battery type	EN-EL3e
Battery life (CIPA standard)	850 shots

Weight and Dimensions

Depth	77 mm
Width	132 mm
Height	103 mm
Weight	620 g