|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.|
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|Maximum format:||35mm full frame|
|Diagonal angle of view:||75.4°-34.3° (35mm full frame)|
|Lens construction:||9 elements in 8 groups, including 1 ASPH, 1 AD|
|Closest focusing distance:||50 cm
Macro: 30 cm
|Number of diaphragm blades:||8|
|Maximum diameter x Length:||Ø70 x 68 mm|
|Materials:||Metallic barrel, metallic mount|
|Filter size:||67 mm|
Design and Features
The Carl Zeiss Vario-Sonnar® T*3.5-4.5/28-70 lens is a compact high-performance zoom lens in the Contax SLR system. It is the perfect choice for the travelling photographer who prefers to use a general purpose zoom lens as his or her standard optic, but still wants to get the superior image quality associated with fixed focal length lenses.
The Carl Zeiss Vario-Sonnar® T*3.5-4.5/28-70 lens offers the focal length range most often used in 35 mm photography, indoors and outdoors.
It combines the renowned image quality of a Carl Zeiss lens and the durability of a metal lens barrel with a moderate weight which is almost as low as that of a high quality 50 mm f/1.4 standard lens.
Two separate precision rings are used for smooth focusing and zooming respectively, thus allowing to adjust one without affecting the other unintentionally. The special makro-function enables close-ups to cover object fields down to the size of e.g. a tulip blossom or an identity card (approx. 7 cm x 11 cm).
An aspheric lens element and a special optical glass with anomalous partial dispersion are utilized to achieve a superb imaging performance while keeping the lens quite compact.
The large filter thread of M 67 allows for the use of filters completely without blackening the corners of the image - even with the lens set to the wide angle position.
|User Manual. English, Adobe PDF, 177 KB|
Alternatives (MF, 24-79 mm)
|Vivitar Series 1 24-70mm F/3.8-4.8 VMC||⊗|