Sony DSLR-A900

September 9, 2008 | Mark Goldstein | Digital SLR Cameras | 5 Comments | |

Sony DSLR-A900The Sony DSLR-A900 is a new 24.6 megapixel, 35mm full-frame digital SLR camera. Featuring a body-integrated image stabilization system and new dual BIONZ processing engines, the Sony A900 also offers a bright, clear optical viewfinder with 100% field of view coverage. The Alpha 900’s newly-developed autofocus system consists of nine wide-area sensors with 10 assist points for improved tracking of moving subjects. High-speed continuous shooting of 24.6 megapixel images at five frames per second and a 3-inch Xtra Fine LCD screen with 921,000 dots complete the headline specs. The Sony DSLR-A900 body will be available in November 2008 for about $3,000 / 2800 Euros / £2100.

Sony Press Release


SAN DIEGO, Sept. 9, 2008 — Sony is introducing its full-frame ? (alpha) DSLR-A900 camera, aimed at serious photo enthusiasts looking for traditional SLR performance with the added benefits of digital photography.

It is designed to deliver ultra-fine picture quality with the world’s highest resolution, 24.6-megapixel, 35 mm full-frame CMOS sensor and fast image processing with a new dual BIONZ® processing engines. The camera is also the first to have a body-integrated image stabilization system for a full-frame sensor with Sony’s SteadyShot® Inside anti-shake system.

One look at the camera’s distinctive pentaprism and nostalgic body design will evoke its full-frame optical performance. It features a bright, clear optical viewfinder with 100% field of view coverage that would impress even film photography loyalists.

“The ? (alpha) DSLR-A900 introduction solidifies Sony’s position as a leading camera manufacturer that can meet the demands of serious enthusiasts,” said Phil Lubell, director of digital camera marketing at Sony Electronics. “It represents the best in sensor and image processing technologies and offers enhanced functions, performance and reliability so photographers can push their creativity to the limit.”

Ultra-Fine Images As The Human Eye Perceives Them
The camera’s Exmor™ CMOS sensor delivers the photographic expressive power of wide angles and perspective that only a 35 mm full-frame sensor can offer, and is designed to take advantage of the resolving power of high-precision ? (alpha) lenses. Its high pixel count and large size provide enhanced image detail and a wider dynamic range for natural color reproduction and subtle tonal gradations.

The sensor is produced using proprietary Sony planarization technologies to ensure an ultra-flat surface across the entire imaging area. Instead of a single analog/digital convertor, the sensor uses over 6,000 on-chip, column-parallel A/D converters to convert analog signals to noise-resistant digital signals at the earliest possible stage. The result is reduced noise and high-speed transfer of data.

Image processing gets a boost in speed and power from the application of two BIONZ image processing engines. Large amounts of data captured by the 24.6-megapixel sensor can be quickly processed to achieve a fast shooting response. Additionally, this dual BIONZ processing system applies advanced noise reduction algorithms producing images of exceptional quality and detail, especially at high ISO sensitivities.

World’s First Anti-Shake System for a Full-Frame Sensor
The camera’s newly-developed, body-integrated SteadyShot Inside unit achieves an anti-shake effect equivalent to shutter speeds faster by 2.5 to 4 stops. This new unit provides stabilization for Sony, Minolta and Konica-Minolta wide angle, large-aperture lenses, which is difficult for lens-integrated systems.

State-of-the Art Optical Performance and Responsiveness
The ultra-bright viewfinder with 100% field of view coverage and 0.74x magnification enables accurate framing and preview. It features a high-power condenser lens, an eyepiece with high reflective-index glass, and a multi-layer, anti-reflective coating on every optical surface to deliver its extraordinarily bright and accurate view.

Additionally, the focusing screen is user-replaceable, with additional L-type (grid pattern) and M-type (super spherical acute matte) screens sold separately.

The camera’s newly-developed autofocus system consists of nine wide-area sensors with 10 assist points for improved tracking of moving subjects. A center dual cross sensor comprised of two horizontal and two vertical line sensors as well as a dedicated f/2.8 sensor are included to achieve greater precision, especially when using fast-aperture lenses.

It also offers high-speed continuous shooting of 24.6 megapixel images at five frames per second. A newly-designed mirror box features a unique parallel-link mirror mechanism that moves on two horizontal axes to accommodate both 100% viewfinder coverage and the body-integrated image stabilization system without increasing the camera’s size. The mirror box also has a new moving magnet actuator, a high-powered coreless motor for a faster shutter charge, and a magnet catcher to minimize mirror bounce and light refraction within the box.

Versatility to Unleash Creative Possibilities
The model’s innovative intelligent preview function takes the guesswork out of setting up a shot and the hassle of taking multiple shots to achieve a desired effect.

After pressing the depth of field preview button, the camera “grabs” a RAW preview image which is processed and displayed on the LCD screen. You can then fine tune white balance, determine the best level and effect of dynamic range optimization, adjust exposure compensation and check histogram data, all before you actually take the picture. Preview images are not recorded on the camera’s memory card, thus saving capacity.

Other key features aimed to expand creative options include the Dynamic Range Optimizer (DRO) with five levels of user-selectable correction as well as DRO bracketing for enhanced scene analysis and graduation optimization. EV bracketing with ±2EV range makes it easy to create high dynamic range composite images.

Thirteen creative styles can be selected to enhance images and then fine-tuned by customizing contrast, sharpness, zone matching and other parameters, while 3 user-programmable memories provide instant access to as many as 26 different mode settings.

Powerful RAW file processing control is put in the photographer’s hands with the included Image Data Converter SR3 software that delivers faster file processing speeds, easy adjustment of image parameters, Dynamic Range Optimization and a new Peripheral Illumination function that compensates for corner light fall off.

With the camera’s HDMI output and Photo TV HD mode, your creative output can be enjoyed on a compatible HD television. This mode brings the look of actual printed photography to the television, by fine-tuning such image parameters as sharpness, gradation and color.

Comfort in Your Hands
Its construction features rugged, lightweight magnesium alloy with moisture-resistant, rubber seals for buttons and dials, an anti-static coating to prevent dust adherence to the imager, and a high-endurance shutter rated for more than 100,000 release cycles.

It has a 3-inch, Xtra Fine LCD screen (921K) makes it possible to check focus and image quality with accuracy. It incorporates an easy-to-see display with a quick navigation menu to easily access common functions without interrupting your creative flow. A backlit LCD panel sits on top of the camera and displays key settings.

System Expansion with New Accessories
The A900 camera will be accompanied with an array of accessories like the recently-announced Sony HVL-F58AM flash unit with its innovative Quick Shift Bounce system, powerful performance with a guide number of 58, and wireless auto flash ratio control.

The Sony® VG-C90AM vertical grip offers the same ease of operation when shooting vertically as horizontally, with its button layout and low-position shutter-release button. It also houses two InfoLITHIUM® batteries (sold separately) for longer shooting and playback.

The DSLR-A900 body will be available in November for about $3,000 along with related accessories. All will be available at authorized dealers, at military base exchanges, Sony Style retail stores (  and at Online pre-orders begin online on Sept. 10.

Key technical specifications

- Model: DSLR-A900
- Camera type: Digital SLR camera with interchangeable lenses
- Lens mount: Sony ? mount, compatible with Minolta A-type bayonet mount (without DT le
- Lens Compatibility: Sony? Lens*1 and Konica Minolta ?/MAXXUM/DYNAX Lens*1
- Image Sensor Type: “Exmor” CMOS Image Sensor
- Image Sensor Size: 35.9 X 24.0mm
- Effective Pixel Number: 24,610K pixels
- Anti-Dust: Charge protection coating on Low-Pass Filter and Image Sensor-Shift mechanism
- Recording media: Memory Stick Duo,Memory Stick PRO Duo,Memory Stick PRO-HG Duo, Compact Flash Type I, Type II (Microdrive),UDMA(Mode5) compliant
- Media slot: Memory Stick Duo/Compact Flash Dual slot
- Image format: JPEG,RAW(ARW2.1 Format),RAW+JPEG
- D-RangeOptimizer: off,Standard/ Advanced: Auto/Advanced: Level
- Image stabislisation: On system image Sensor-Shift mechanism
- Noise reduction: On/Off, available at shutter speeds longer than 1 second, High/Normal/Low/Off, available at the ISO set to 1600 or above
- Auto Focus system: TTL phase-detection system, CCD line sensors, 9 points + 10 assist focus points
- ISO sensivity: ISO 200 - 3200 equivalent, ISO numbers up from ISO100 to ISO6400 can be set as expanded ISO range.
- Flash system: External, Wireless control with HVL-F58AM, ADI flash / Pre-flash TTL metering
- Shutter: Electronically-controlled, vertical-traverse, focal-plane type
1/8000 second - 30 seconds speed range, bulb
- Continuous-advance rate: Hi:Approx.5 frames per second at maximum, Lo:Approx.3 frames per second
- LCD Monitor: 7.5 cm(3.0”), TFT Xtra Fine, 921 600(640x3(RGB)x480) dots
- Battery type: InfoLitium NP-FM500H,7.2V
- Battery life: Approx. 88 0 shots(CIPA measurement)
- Dimensions: Approx.156x117x82mm(6 1/8 x 4 5/8 x 3 1/4 inches)
- Weight: Approx. 850g (1 lb 14 oz)

Sony DSLR-A900

Sony DSLR-A900

Sony DSLR-A900

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Your Comments

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surely enough , Sony wouldn't ever dare to put this camera on production in Taiwan .... :):):):):):):):)

6:14 pm - Tuesday, September 9, 2008

#2 Mustafa Ajlan Abudak-Turkey

I wholeheartly congratulate Sony. A900 seems to shake the market, I hope the IQ and the image quality will surpass the expectation. Competiton is a good thing and Sony deseves to get a big applause.Maybe they won't be the leader in fallowing two years but it seems their eyes are on the 2nd place and they starts to do all they can to get it.

6:49 pm - Tuesday, September 9, 2008

#3 Mustafa Ajlan Abudak-Turkey

And I forgot to state that Canon adds hail 'Evoution' Yeah I think Canon achieved that claim but it is very nice to see Konica/Minolta DNA with Sony designer logic make the the machine something like destined too.Maybe Canon did this by technology circle of a photography company but Sony took solid photographic DNA and pre-loaded its innovation vision inside the strand.Then we get this result.Yeah they are still rookie in some aspects (iso-finer detail-servo/burst) but it is sure thing they learn to evolve like every survial of the fittest.At the end Evolution is a learning process not just copy paste..( you get what I mean:) well done Sony...

6:59 pm - Tuesday, September 9, 2008

#4 Mustafa Ajlan Abudak-Turkey

Very satisfiying results.Good job.Under low iso 400 and below seems ok or very well but above a little bit far way the performance of Canon CMOS.This is the view at first glance.

9:54 pm - Tuesday, September 9, 2008

#5 noise noise noise

The samples provided at dpreview show much higher noise and denoising artifacts than the 50D. overcrowded FF sensor...

8:25 pm - Wednesday, September 10, 2008