|DT||The lens is designed only for Sony APS-C digital SLR cameras.|
|SONNAR||Optical design invented by Ludwig Bertele in 1929. Lenses that use this optical design are lightweight and of high speed. The Sonnar designation comes from German word Sonne which means "sun" and emphasized the lens speed of 2.0 (that was extraordinary rare in those days). In comparison with Planar the Sonnar design has more optical aberrations but the contrast and flare control is much better. In comparison with older Tessar design it has less chromatic aberrations and the lens speed is higher. Due to short working distance the Sonnar design could not be used in wide angle lenses for SLR cameras. That's why Sonnar lenses for SLR cameras are generally available with focal lengths of 135mm or more.|
|T*||The multi-layer coating is applied to the surface of lens elements. It boosts light transmission, ensures sharp and high contrast images, minimizes ghosting and flares.|
|ZA||Carl Zeiss lens designed for Sony digital cameras.|
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|Diagonal angle of view:||82.9°-20° (Sony APS-C)
|Lens construction:||14 elements in 10 groups, including 2 ASPH|
|Closest focusing distance:||35 cm|
|Number of diaphragm blades:||7|
|Type of autofocus motor:||No motor (Minolta/Sony A)
|Full-Time Manual Focus:||Yes|
|Maximum diameter x Length:||Ø72 x 83 mm|
|Materials:||Plastic barrel, metallic mount|
|Filter size:||62 mm|
The lens barrel is of moderate weight, made of plastic. The lens mount is metallic.
The lens lacks focusing mode switch, therefore you have to set the automatic or manual focus mode from the camera. Direct Manual Focus is available.
The lens uses front filters with standard size of 62 mm which are easy to find. They are also inexpensive.
The filter thread does not rotate during focusing which allows convenient use of different types of filters (including but not limited to polarizing and gradient).
Aspherical elements (ASPH, XA) minimize spherical aberration, astigmatism, coma and ensure excellent sharpness and contrast even at maximum aperture.
|Camera||Sony Alpha DSLR-A700||Sony Alpha DSLR-A100|
|Sensor size||23.5×15.6 mm||23.6×15.8 mm|
|Distortion at 16 mm||-3.25 %||-3.9 %|
|Distortion at 80 mm||+0.55 %||+0.64 %|
|Vignetting at 16 mm F/3.5||-1.41 EV||-1.6 EV|
|Vignetting at 80 mm F/4.5||-0.77 EV||-1.11 EV|
|User Manual. Multilingual, Adobe PDF, 3 MB|
|User Manual. Multilingual, Adobe PDF, 6 MB|