Sony has set up itself to release the Alpha 55 and Alpha 33 on September 10, which will be the world’s first digital SLRs based on Translucent Mirror Technology.
The conventional SLRs used the mirror box, but in these new cameras a unique mirror box is used with a transparent mirror. Due to this these can achieve super fast continuous shooting at 10 frames per second and continuous focusing, earlier which were only possible with bulky, expensive SLRs for professional use. Also these cameras are the world’s first to feature TTL phase which is used for difference detection in video mode.
“By using a transparent mirror, we’ve enabled the light coming in through the lens to continually reach the autofocus sensor and the image sensor simultaneously. As a result, the autofocus operates continuously.”
The new Alpha 55 features the newly developed Exmor APS HD CMOS sensor with effective resolution of 16.2 megapixels, while the Alpha 33 is equipped with 14.2 megapixel sensor. The CMOS sensor in the Alpha 55 achieves faster read-out, and due to recent advances in image processing, these cameras have achieved a 20% higher sensitivity and a 30% reduced noise levels.
These cameras are an addition to Alpha series, and first one to feature Tru-Finder, a newly developed electronic viewfinder. The 3 inch 920,000 dot high resolution Xtra Fine LCD enables smooth display at 60 frames per second. The display uses vari-angle tilt, 180 degrees in vertical direction and 270 degrees in the horizontal, allowing the camera to be used from a wide range of angles.
The translucent mirror is also used in video shooting, capturing focused video in AVCHD full high definition format, and the autofocus feature works with all lenses except full manual ones.
Pricing and Availability:
The α55 and α33 cameras will cost about $750 and $650 (respectively) for the body only and about $850 and $750 (respectively) for the body and 18-55mm zoom lens. The α33 camera will be available in September and theα55 model will be available in October at Sony Style® retail stores (www.Sonystyle.com/retail) and at authorized dealers nationwide.
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