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Thread: Sony launches the A900 full-frame DSLR

  1. #1
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    Sep 2005
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    Sony launches the A900 full-frame DSLR



    Sony is introducing its full-frame α (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 α (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 α (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.

  2. #2
    Join Date
    Oct 2005
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    792

    Sony Alpha 900 DSLR Model Technical Specification

    Long months after its emergence as a model wooden windows in the new (and first of its kind) full-reflex digital format Sony has finally appear to leave his true face. Known as Alpha 900, this reflex-board sensor dimensions of the film 24 x 36 mm (which continues to serve as a reference in the world of photo) and the resolution of which reached 24 million pixels. It is therefore of CMOS whose specifications were filtered at the beginning of the year. And with regard to the resolution, we note that the Alpha 900 is closer Canon 1Ds Mark III as the Nikon D700, another novelty on full format.

    This reflex, built in magnesium alloy, should welcome those who have a wide range optical after the silver and who will thus be used without undergoing the conversion factor (1.5 x at Sony) that shifts the focus beach to the telephoto position, thus depriving the owners of large-angle back they are entitled to expect. It should also respond to those professionals who need files and quality that only medium-formats have long been able to produce.




    156 x 117 x 82 mm to 850 grams

    As a majority of recent reflex, Apha 900 enjoys a wide screen dimensions and a large fine detail. The set is done through a pentaprism which covers 100% of the field (this is an undeniable comfort), but whose report magnification is a step backwards from that of the Alpha 700, for example. The stabilizer by the sensor, which has participated in its time the reputation of Konica Minolta which Sony has since resumed its activity reflex is still there. It has however improved over time by being able today to display the stabilization level achieved in the viewfinder using a cursor five bars and saving up to four speeds. On the side of the engine, it retains the capacity of the aircraft to carry out gusts of around 5 Jpeg per second, which is quite impressive in terms of weight files generated.

    It holds that finally the Alpha 900 plays purists refusing to class a device Live View whose relevance remains widely discussed. It loads, however, a preview function which, through the tester depth of field, can test the color rendering, the correction of exposure, etc.. Before the outbreak.

    Here are the main specifications:
    • Sensor: CMOS 35.9 x 24 mm of 24.6 million pixels
    • Display: LCD 3 "921 600 pixels (640 x 480 x 3 (RGB))
    • Viewfinder: pentaprism 100% magnification x 0.74
    • Sensitivity: 100 to 3 200 Iso (extension until 6 400 Iso)
    • Flash: synchro 1 / 250 seconds
    • Shutter speed: 1 / 8 000 in 30 seconds
    • Support registration: Compact Flash I and II, Memory Stick Duo / Pro Duo and PRO-HG Duo
    • Interface: Video, HDMI, DC-IN
    • Power: Lithium Ion battery NP-FM500H


    The Sony Alpha 900 will be available in late September 2 to 800 euros, the same rate as the D700, its counterpart signed Nikon. Finally, the unknown in the price of much-anticipated successor to the Canon EOS 5D, whose next release is no longer a secret to be revealed.

  3. #3
    Join Date
    Oct 2005
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    2,393
    Mostly they (from Nikon) should release a box with the same sensor by little, but not at the same rate.
    By imposing against the memory stick in such a box is zero, I preferred two CF as on D3.

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