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 utilised 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.