Nikon D90 User Manual

ISO Sensitivity
"ISO sensitivity" is the digital equivalent of film speed. The higher the ISO sensitivity,
the
less light needed to make an exposure, allowing higher shutter speeds or smaller
apertures.
ISO sensitivity can be set between values roughly equivalent to ISO 200 and ISO 3200
in steps equivalent
to '13 EV. For special situations, ISO sensitivity can be lowered
below
ISO 200 by about 0.3 EV (t 0.3, equivalent to ISO 160),0.7 EV (t 0.1, equivalent
to ISO 125), or 1.0 EV (t to, equivalent to ISO 100), or raised above ISO 3200 by about
0.3 EV (H 0.3. equivalent to ISO 4000), 0.7 EV (H 0.1, equivalent to ISO 5000), or 1.0 EV
(H to, equivalent to ISO 6400). Auto and scene modes also offer an AUTO option (the
default setting), which allows
the camera to set ISO sensitivity automatically in
response
to lighting conditions. ISO-AUTO is displayed in the control panel and
viewfinder when
AUTO is selected.
ISO sensitivity can be selected by pressing the E{~ (ISO) button and rotating the main
command dial until the desired setting
is displayed in the control panel. ISO
sensitivity can also be adjusted from the shooting menu (pg. 165).
E{~ (ISO) button
Main command dial Control panel
74
• AUTO
If the mode dial is rotated to P, S, A, or Mafter ISO-AUTO is selected for ISO sensitivity in
another mode, the ISO sensitivity last selected in P, S, A, or M mode will be restored.
• HIO.3-HI1
Pictures taken at these settings are more likely to be subject to noise and color distortion.
• See
Also
For information on enabling auto ISO sensitivity control in P, S, A, or Mmodes, see page 78. For
information on using the High ISO NR option in the shooting menu to reduce noise at high ISO
sensitivities, see page 165.

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