Zeiss present the Apo Sonnar T* 2/135 with 135 millimeters focal length. The new product is the longest telephoto lens in the companys high-quality SLR range.
The Apo Sonnar T* 2/135 can portray objects up to a scale of 1:4. The design employs the proven Carl Zeiss "Floating Elements“ design. The special, variable arrangement of the lenses provides excellent imaging properties over the entire focusing range from 0.8 m to infinite. The compact telephoto lens includes eleven lenses in eight groups. Lenses made of special glass with anomalous partial dispersion are used as apochromat for the lens to correct chromatic aberrations (longitudinal chromatic aberrations). As a result, the longitudinal chromatic aberrations are considerably lower then the defined limits. Bright-dark transitions in the image and especially highlights are reproduced largely free from colour artefacts.
As with all other SLR lenses of the ZE and ZF.2 series, the Carl Zeiss T* Anti-Reflex coating and elaborate treatment of the lens edges with deep-black special paints provide insensitivity against reflexes and light scatter. The user also benefits from the large rotation angle of 268° which allows precise focusing.
For applications with large area sensors or line cameras up to 43 mm, a total of thirteen SLR lenses are now available for focal lengths from 15 to 135 millimeters.