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27th August 2009
Aimed at experienced shooters looking for value and sophisticated SLR performance, Sony today introduced the full-frame α850 camera and a new 28-75mm F2.8 lens.
The α850 model shares the same 24.6 megapixel sensor and most features of the flagship α900 camera, introduced last year, but will be available for just under $2000 (body only).
“Sony is bringing the benefits of a full-frame digital SLR camera to a broader group of consumers,” said Kristen Elder, director of AMC business unit in the Digital Imaging Division at Sony Electronics. “The α850 strengthens Sony’s alpha DSLR line, which now offers models in each step from high-end professional down to the amateur enthusiast.”
The α850 camera is designed to deliver ultra-fine picture quality with a high resolution, 24.6-megapixel, 35-mm full-frame Exmor™ CMOS sensor and fast image processing with dual BIONZ™ processing engines. It also offers high-speed continuous shooting of 24.6 megapixel images at up to three frames per second.
Ultra-Fine Images
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.
Image processing gets a boost in speed and power from two BIONZ 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 system applies advanced noise reduction algorithms producing images of exceptional quality and detail, especially at high ISO sensitivities.
Capture the Right Shot the First Time
The camera’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.
The camera’s autofocus system features nine 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.
Ultra-Bright Viewfinder with 98 Percent Coverage
The ultra-bright viewfinder with 98 percent 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 optical surfaces to deliver its extraordinarily bright view.
A mirror box features a parallel-link mirror mechanism that moves on two horizontal axes to accommodate both the large full frame mirror and the body-integrated image stabilization system without increasing the camera’s size.
Anti-Shake System for a Full-Frame Sensor
With its body-integrated SteadyShot INSIDE™ image stabilization, the camera achieves an anti-shake effect equivalent to shutter speeds faster by 2.5 to 4 stops. The anti-shake system stabilizes all Sony, Minolta and Konica-Minolta compatible lenses even wide angle or large aperture lenses.
Versatility to Unleash Creative Possibilities
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.
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 reproduction.
The a850 model features a 3-inch (diagonally), Xtra Fine LCD™ screen (921K) making 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.
The camera includes dedicated slots for high-capacity Memory Stick PRO Duo™, Memory Stick PRO-HG Duo™, HX series and CompactFlash® media.
Bright Lens
The choice of full-frame lenses to complement the α850 model is enhanced with the new SAL2875 28-75mm F2.8 SAM lens. This compact, easy-to-carry lens is ideal for photo enthusiasts looking to add a bright, general purpose zoom to their collection of full-frame optics.
Delivering excellent imaging quality at an accessible price, it offers a wide F2.8 aperture over its entire zoom range. Ideal for day-to-day shooting tasks, its bright constant aperture makes the 28-75mm F2.8 SAM particularly valuable for depth-of-field control and available-light portraits.
Pricing and Availability
The a850 (model DSLR-A850) will be available in September for about $2,000 (body only) along with related accessories. All a900 accessories are compatible with the a850 camera, including the dedicated vertical grip (model VG-C90AM). The SAL2875 lens will be available in November for about $800. All will be available at authorized dealers, at military base exchanges, Sony Style retail stores (www.sonystyle.com/retail) and at sonystyle.com.
Price (with 28-75mm SAM lens) |
• US: ~$ 2800 |
Body material |
Magnesium Body |
Sensor |
• 35.9 x 24.0 mm CMOS sensor 'Exmor' |
Image sizes [Still] |
• 6048 x 4032 (24M 3:2) |
File qualities / formats |
• RAW (.ARW 2.0) |
Dust reduction |
• Charge protection coating on low-pass filter |
Lenses |
• Sony Alpha lenses |
FOV crop |
1.0 x |
Image Stabilization |
• CCD-Shift ' SteadyShot INSIDE' system |
Auto Focus |
• TTL CCD line sensors (9-points, center dual cross types + 10 assist sensors) |
AF area selection |
• Wide AF area |
Focus modes |
• Single-shot AF |
AF assist |
• Yes (built-in LED lamp) |
Eye-start AF |
No |
Shooting modes |
• Auto |
Sensitivity |
• Auto (200 - 1600) - upper/lower limit selectable * |
Metering modes |
• Multi-segment (40 segment Honeycomb pattern) |
Metering range |
• TTL metering |
AE Lock |
• AEL button (customizable) |
AE Bracketing |
• Single or continuous bracketing |
Exposure compen. |
• -3.0 to +3.0 EV |
Shutter |
Electronically-controlled, vertical-traverse, focal-plane Shutter |
Shutter Speed |
• 30 to 1/8000 sec |
Flash X-sync |
• 1/250 sec |
Aperture values |
Depends on lens, 0.3 EV steps |
DOF preview |
Yes, dedicated button |
White balance |
• Auto |
White balance fine tuning |
• Auto (none) |
White balance bracketing |
• 3 frames |
Dynamic range optimizer |
• Off |
Color space |
• sRGB |
Color modes |
• Standard |
Image parameters |
• Contrast (-3 to +3) |
Noise reduction |
• Long exposure for exposures longer than 1 second (User controllable: On / Off) |
Viewfinder |
• Eye-level fixed optical glass pentaprism |
LCD monitor |
• 3.0" 'Xtra Fine' TFT LCD |
Flash compensation |
-3.0 to +3.0 EV in 0.3, 0.5, 0.7, 2.0 EV steps |
Flash Mode |
Auto, Fill-Flash, Rear sync , High Speed Sync |
External flash (optional) |
• Sony HVL-F58M |
Drive modes |
• Single-frame |
Continuous |
Approx 3 fps max |
Self-timer |
• 10 sec |
Orientation sensor |
Yes, for shooting, playback and control panel display |
Connectivity |
• USB 2.0 Hi-Speed (mass storage, Multi-LUN or PTP) |
Remote control * |
• Wired: with optional RM-S1AM or RM-L1AM |
Video out |
• AV (Selectable NTSC or PAL) |
Storage |
• Compact Flash Type I/II, UDMA Mode 5 compliant |
Power |
• NP-FM500H Lithium-Ion rechargeable battery (1650 mAh) |
Vertical grip |
• Vertical Grip VG-C90AM |
Dimensions |
156 x 117 x 82 mm |
Weight (body) |
850 g |
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