|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:||33.4°-12.2° (35mm full frame)|
|Lens construction:||15 elements in 12 groups|
|Closest focusing distance:||180 cm
Macro 1:2: 30 cm
|Number of diaphragm blades:|
|Maximum diameter x Length:||Ø77 x 186 mm|
|Materials:||Metallic barrel, metallic mount|
|Filter size:||67 mm|
|Hood type:||Metal hood 3 with 67/86 ring|
Design and Features
With a focal length variation of factor 3 this Vario-Sonnar covers the range between the standard focal length and extreme tele focal lengths. The optimal angle of view can be selected exactly by continuously varying the focal length, while fully retaining the sharp focus as well as the speed of f/3.5, which is remarkably high considering the handy size of the lens. At the longest focal length of 210 mm in the zoom range and with front element focusing to the shortest object distance of 1.8 m, an object area of 170x255 mm fully covers the negative format of 24x36 mm.
After changing over to the macro range by setting the focal length to 210 mm and then moving the focal length setting ring towards shorter focal lengths, the distance of the sharply focused object plane rapidly decreases and, on the other hand, the image scale increases. At an object distance of 0.3 m from the film plane, an area as small as 46x69 mm fully covers the negative format. At this distance, which corresponds to an image scale of about 1:2, the depth of field for f-number 11 is scarcely +/-2 mm. Therefore, when working with the Vario-Sonnar in macro position, one should stop down appropriately, just as one has to with other macro lenses.
Unusual sharpness and contrast over the entire zoom range from 70 to 210 mm focal length secure for this Vario-Sonnar a top position among lenses of its class, even at full aperture. Full advantage of the flexibility of the Vario-Sonnar can be taken when photographing in rapidly changing situations.
The possibilities of this lens are multiplied by the fact that after simple switch-over it can be used in the macro range, which is of particular importance in nature photography and for technical and scientific applications.
Landscape photography1)▪Wild nature photography1) Distant landscapes with perspective compression effect
|User Manual. English, Adobe PDF, 1 MB|