Sony's a99 is the firm's first Translucent Mirror camera to feature a full-frame 35mm imaging sensor with a resolution of 24.3 megapixels.
"The full-frame sensor's resolving power is enhanced by a newly developed separate multi-segment optical low-pass filter," says Sony. "Assisted by an all-new front-end LSI, the Bionz engine processes massive amounts of image signal data from the Exmor CMOS Sensor at very high speeds. Together with a powerful new area-specific noise reduction (NR) algorithm, this achieves a 14-bit raw output, rich gradation and low noise," it claims.
The new camera offers a sensitivity range of ISO 50 to ISO 25,600, falling short of what Nikon and Canon now offer in their full-frame cameras. But Sony claims to offer a burst rate at full-resolution of up to 6fps and 10fps in tele-zoom, high-speed shooting mode.
The a99 has a 19-point AF system. However, with 11 cross sensors and a multi-point focal plane phase-detection AF sensor, Sony claims to offer more than 102 AF points, which, with the camera's Translucent Mirror, allow for "ultra-fast, accurate autofocusing that maintains tracking focus even if the subject leaves the 19-point AF frame".
The α99 can also record full-frame Full HD 50p/25p, switchable to 60p/24p, videos. Sony has introduced a new silent multi-controller, which allows for adjustment of exposure compensation, ISO sensitivity, shutter speed, aperture and audio record levels during capture. "Other movie-oriented enhancements include real-time Full HD video output via HDMI, and uninterrupted dual-card recording using both of the camera's media slots," adds Sony.
Finally, the a99 weighs 733g, is weather-resistant and will be available in November at a retail price of £2500.
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