Sony Alpha DSLR-A900
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Manufacturer: Sony
Date of Production: 2008/2009
Variants: budget variant Sony Alpha DSLR-A850
Type of Camera: DSLR
Sensor type: 24.4 megapixel CMOS
Lens: Minolta AF mount
Shutter: focal plane shutter
Shutter speed range: 30 sec. to 1/8000 sec.
Viewfinder: pentaprism 100% 0.74× reflex finder -3 to +1 diopter corr.
ASA/ISO range: 100, 200, 400, 800, 1600, 3200, 6400
Flash: flash sync 1/250 s to 30 s w/ flashgun on Dynax/Maxxum inverse flash shoe
Exposure Modes: program, aperture prio, shutter prio, manual
Exposure Metering: TTL
Focusing: phase detection
Focusing areas: 2 cross sensors, 10 dots
Continuous Shooting: 4.5 fps
Bracketing: 3 or 5 pics in 0.3, 0.5 or 0.7 EV steps
Frame size: 35.9×24.0 mm, 6.048×4.032 pixels
Custom WB: sunny, cloudy, flourescent, light bulb 3 individual settings between 2500 K and 9900 K
Programs: portrait, landscape, macro, action, sunset, night-portrait
Rear LCD monitor: 3" color display, 921.600 pixels
Image Data Recording: CF I/II or MS Duo
Battery: rechargeable Li-ion NP-FM500H 1.650 mAh battery
Optional Battery Packs: VG-C90AM grip allows 2nd NP-FM500H battery
Weight: 850g w/o battery
Dimensions: 156mm×117mm×82mm
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The Sony Alpha DSLR-A900 was Sony's first professional DSLR. It has Sony's special Exmor CMOS image sensor which has no pixels hidden behind conducting paths of the chip, thus being more light sensitive with a better dynamic range than older Sony sensors. The sensor has almost the same format as the 24x36mm image frames of the normal 35mm film cameras, thus giving an advantage to those photographers who have good old autofocus lenses for analog Minolta AF cameras. New lenses for this Minolta/Sony Alpha lens system are available from Sony and Zeiss. Be careful not to choose one designed only for Konica Minolta or Sony DSLRs with smaller "APS" format chip.