Friday, February 1, 2008
Sony Expands Alpha Lens System With Two High-Performance Zooms
SAN DIEGO, Jan. 30, 2008 – Sony today announced two new high performance zoom lenses that offer α (alpha) digital SLR camera users more options for high picture quality.
Vario Sonnar T* 24-70mm f/2.8 ZA
The SAL2470Z lens excels in difficult lighting circumstances thanks to its f/2.8 aperture, which remains constant throughout the focal length range. The nine-blade, circular iris is especially useful in controlling background defocusing in portrait and landscape images. Combined with Sony’s in-camera Super SteadyShot® system, this lens is the only compatible large aperture standard zoom with the benefit of image stabilization available in the industry.
Quick and precise focusing is delivered by Sony’s Super Sonic wave Motor (SSM) technology. This SSM system utilizes a solid-state focus drive motor that features silent, high-speed response with high-torque and fine rotational control – especially important for large, wide aperture lenses. A mode selector for manual and automatic focus as well as a focus hold control is provided on the lens barrel.
70-300mm f/4.5-5.6 G
The use of extra-low dispersion glass compensates for chromatic aberrations which challenge long telephoto zoom lens design, maintaining excellent optical characteristics from center to periphery. Internal focus construction not only realizes compact size, but also a close focusing capability of just 47 inches (1.2m), unusual for a lens of this focal length range.
Like the SAL2470Z, focus drive is provided by Sony’s Super Sonic wave Motor (SSM) technology. Silent and highly accurate, the SSM system is ideal for providing larger lenses with the speed and rotational precision often required by telephoto shooting. To match auto focus operation to the situation, a focus range limiter can be set to a minimum distance of three meters. A lens barrel mounted focus hold button locks focus if desired.
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