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Sony’s 24.6-megapixel Alpha 900 Launched

 Alpha 900 Specification

Digital SLR camera for use with interchangeable lenses
Lens mount
Sony α mount
Lens compatibility
Sony α lenses, Minolta and Konica Minolta AF lenses *1
Image sensor
Image sensor
35mm-film format (35.9 ‚˜ 24.0mm), Exmor CMOS sensor
Effective pixels
Approx. 2460 megapixels
Total pixels
Approx. 2570 megapixels
Aspect ratio
Anti-dust function
Charge protection coating on low-pass filter, image-sensor shift mechanism
ISO sensitivity (Recommended Exposure Index)
ISO200-3200 in 1/3 EV steps iISO100 – 6400 can be set as expanded ISO range.j
ISO Auto Range: ISO200-1600, ISO200-1600, ISO400-1600, ISO400-800, ISO200-800, ISO200-400 selectable
Image format
JPEG (DCF2.0 and Exif 2.21 compliant, DPOF supported), RAW (Sony ARW 2.1 format), RAW & JPEG
Image Size
[Aspect Ratio 3:2] L size: 6048×4032 (24M), M size: 4400×2936 (13M), S size: 3024×2016 (6.1M)
[Aspect Ratio 16:9] L size: 6048×3408 (21M), M size: 4400×2472 (11M), S size: 3024×1704 (5.2M)
[APS-C Size Capture] L size: 3984×2656 (11M), M size: 2896×1928 (5.6M), S size: 1984×1320 (2.6M)
Image quality modes
RAW, cRAW (compressed), RAW & JPEG (Fine), cRAW (compressed) & JPEG (Fine), Extra Fine, Fine, Standard
Memory Stick Duo, Memory Stick PRO Duo, Memory Stick PRO-HG Duo, CompactFlash (Type I/Type II, UDMA Mode 5 compliant), Microdrive
Card slot
Dual slot for Memory Stick Duo/CompactFlash, Selectable with Quick Navi or from Setup Menu
Noise reduction
Long exposure NR: On/Off selectable, available at shutter speeds longer than 1 sec.,
High ISO NR: High/Normal/Low/Off selectable at ISO 1600 or higher
Colour space
sRGB/Adobe RGB selectable from Recording Menu
Creative style
13 image styles: Standard/Vivid/Neutral/Clear/Deep/Light/Portrait/Landscape/Sunset/Night View/Autumn Leaves/B&W/Sepia
Adjustable parameter: Contrast/Saturation/Sharpness/Brightness/Zone Matching *
6 settings can be registered
*Saturation cannot be set for B&W and Sepia.
D-Range optimizer
Mode: Off/Standard/Advanced Auto/Advanced (Lv 1 to 5)
DRO Advanced Bracketing: 3 frames, Hi/Lo level selectable
White Balance
Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent, Flash, Colour Temperature (2500-9900K) with colour filter (19-step magenta/green compensation), Custom (3 settings can be registered)

White Balance Bracketing: 3 frames; Hi/Lo level selectable
TTL phase detection system
CCD line sensors
Focus point
9 points (centre dual-cross type) with 10 assist points
Sensitivity range
EV 0 – 18 iat ISO100)
Single shot AF (AF-S), Automatic AF (AF-A), Continuous AF (AF-C), Direct Manual Focus (DMF), Manual Focus (MF)
Focus area
Wide, Spot, Local (9 local focus areas, selectable with multi selector)
AF Micro Adjustment (+/- 20-step increments for up to 30 different lenses), Predictive control, Focus lock, AF illuminator (LED, Range: approx. 1-7m, Auto/Off selectable)
Type: TTL metering
Metering Cell: 40-segment honeycomb-pattern SPC
Range: EV 0 – 20 iEV 2 – 20 in spot metering mode) (at ISO100 with F1.4 lens)
Mode: Multi segment, Centre-weighted, Spot
Exposure control
Mode: Auto, Program Auto (P, with program shift), Aperture priority (A), Shutter priority (S), Manual (M)
Exposure Compensation: +/- 3 EV, 0.3 / 0.5 EV steps selectable
Exposure Bracketing: 3/5 frames selectable, Single or Continuous selectable, 0.3/0.5/0.7/2.0*EV steps selectable
*2.0 EV bracketing limited to 3 frames.
Fixed eye-level, pentaprism
Field coverage
Approx. 100%
Approx. 0.74x (with 50mm lens at infinity, -1m-1)
Diopter adjustment
-3.0 to +1.0m-1
Approx. 20mm from the eyepiece (at -1m-1)
Focusing screen
Spherical acute matte screen (G type)
User-replaceable L type (Grid type) and M type (Super spherical acute matte type) available (with both types optional)
Viewfinder display
Focusing screen
AF area, Spot AF area, Spot metering area, Shooting area for aspect ratio 16:9, APS-C size area
Other displays
Flash compensation, Flash charging, Wireless flash, High-speed sync, Manual focus, Focus signal, Shutter speed, Aperture, EV scale, AE lock, Shot-remaining counter, Camera shake warning, SteadyShot scale, Aspect ratio 16:9
Eyepiece shutter
LCD Monitor Display
3.0-inch type* Xtra Fine LCD 
*Viewable area, measured diagonally
Total number of dots
921,600 dots
Brightness adjustment
Adjustable in +/- 5 steps
Preview Function
Intelligent Preview/Optical Preview selectable from menu
Display Panel
Shutter speed, Aperture, Exposure compensation, White balance, ISO sensitivity, Drive mode, Battery remaining, Remaining number of recordable images, with illumination
Electronically-controlled, vertical-traverse, focal-plane type
Speed range
1/8000 to 30 sec., Bulb
Flash sync. speed
1/250 sec. w/o SteadyShot INSIDE, 1/200 sec. w/ SteadyShot INSIDE
SteadyShot INSIDE (Image Stabilization)
Image-sensor shift mechanism
SteadyShot scale and camera-shake warning in the viewfinder
Compensation effect
Equivalent to approx. 2.5 to 4 steps in shutter speeds (varies according to shooting conditions and lens used)
Flash Control
External flash
α system flash units (optional)
ADI , pre-flash TTL
Flash compensation
3 / 5 frames, +/- 3EV, 0.3 / 0.5 EV steps selectable
Autoflash, Fill-flash, Rear sync, Wireless*, Slow sync, High-speed Sync,
*HVL-F58AM, HVL-F56AM, HVL-F42AM, HVL-F36AM supported; full multi-flash functionality requires at least one HVL-F58AM
Flash bracketing
3 / 5 frames, 0.3 / 0.5 / 0.7 / 2.0*EV step selectable
*2.0EV bracketing limited to 3 frames.
Sync terminal
Built-in, adaptable to the sync. terminal of the opposite polarity 
Single, Continuous (Hi/Lo selectable), Self-timer (10 sec. /2 sec. delay selectable), Mirror lockup, Remote commander
Continuous shooting speed
Hi: approx 5 frames per sec. (max.), Lo: approx. 3 frames per sec. (max.)
Number of frames recordable
Standard: 285, Fine: 105, Extra Fine: 11, RAW: 12, cRAW: 12, RAW & JPEG: 10, cRAW & JPEG: 10
Single (with or without shooting information, with 4 previous/following images, RGB histogram, & height light /shadow warning), 4/9/25-frame index view, enlarged display mode (max. zoom ratio: L size: 19x, M size: 14x, S size: 9.4x)
PC interface
USB2.0 Hi-speed
Mass Storage / Multi LUN / PTP / PC Remote Control
Supported OS
Windows: Windows 2000 Professional/Windows XP/Windows Vista
Macintosh: Mac OS X (v10.1.3 or laterj 
Video output
NTSC/PAL selectable
HDMI output
HDMI mini connector, 1080i/720p/SD selectable (optional HDMI cable necessary )
Remote control
Remote Commander RM-S1AM/RM-L1AM (optional)
Wireless Control
With supplied Remote Commander
PhotoTV HD supported
Print Function
Compatible standards
Exif Print, Print Image Matching III, PictBridge
Power source
One Rechargeable Battery Pack NP-FM500H
One CR2025 for Wireless Remote Commander
Battery performance
Approx. 880 shots (measured using CIPA standard)
External power source (AC adapter)
AC Adapter/Charger AC-VQ900AM (optional)
Approx. 850g (1 lb 14 oz) (w/o battery, memory card, accessories)
Approx. 156.3 (W) x 116.9 (H) x 81.9 (D) mm (excl. protorusions)
6 1/8 x 4 5/8 x 3 1/4 inches
Operating Temperature
0 to 40 degrees C (32-104 degrees F)

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