|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:||84°-28.5° (35mm full frame)|
|Lens construction:||14 elements in 12 groups, including 2 ASPH, 2 FL|
|Closest focusing distance:||50 cm|
|Number of diaphragm blades:||7|
|Type of autofocus motor:||Ultrasonic (Contax N)
|Full-Time Manual Focus:||Yes|
|Maximum diameter x Length:||Ø90 x 71 mm|
|Materials:||Metallic barrel, metallic mount|
|Filter size:||82 mm|
|Hood type:||Metal hood GB-81|
Design and Features
The Vario-Sonnar T* 3.5-4.5/24-85 lens is a compact, all-purpose lens with autofocus and high image quality for the Contax N1 SLR system. The zoom range of the Vario-Sonnar T* 3.5-4.5/24-85 lens covers the most popular focal lengths in 35 mm photography, including extremely wide angles up to 84 degrees which are often necessary for the photography of interiors. The smallest object field which can be covered without accessories is 24 cm wide, with a minimum object distance of 35,3 cm.
This makes the Vario-Sonnar T* 3.5-4.5/24-85 lens the ideal lens when you are out and about and especially when you want a versatile zoom lens as your standard optics, but expect it to deliver the same high image quality as fixed focal length lenses.
To achieve this high image quality along with relative compactness, this lens uses elements made of special fluor-crown glass with anomalous partial dispersion, and additional aspheric surfaces.
With M82, the filter thread has deliberately been given ample dimensions to allow the combination of high-quality filters with this lens without vignetting of the corners – even when wide-angle settings are used. In addition, a lens hood can be mounted using a quick-change bayonet.
Preferred applications: All-purpose lens, travelling, landscapes, snapshots, editorials.
The type of autofocus motor is indicated according to Conurus. The lens can be converted to Canon EF mount with AF support by Conurus service.
|User Manual. English, Adobe PDF, 351 KB|