Carl Zeiss Vario-Sonnar T* 17-35 mm f/ 2.8 Lens Manuel

Page de 4
Vario-Sonnar
®
 T* 2.8/17-35
       
48 to film
102
96
CONTAX
®
 N
Extreme wide-angle, fast f/2.8 zoom lenses are among the 
preferred optics of today’s photojournalists and travel 
photographers. 
For the Contax N SLR system, Carl Zeiss has designed an all 
new Vario-Sonnar® T* 2,8/17-35 lens. With this zoom lens Carl 
Zeiss has incorporated 3 aspheric surfaces along with lens 
elements from special types of optical glass to achieve an image 
quality comparable to very good fixed focal length lenses, 
especially at the super wide end. This is particularly beneficial 
since extreme wide-angle photos should be blown up large, like a 
double spread, to really deliver that special impression of super 
wide vistas. For this purpose of high enlargements convincing 
sharpness is mandatory. The Vario-Sonnar® T* 2,8/17-35 lens 
utilizes the full potential of modern color films and delivers 
images of impressive brilliance and sharpness. 
To enable the use of special effect filters without any vignetting, 
the Vario-Sonnar® T* 2,8/17-35 lens is equipped with a very 
wide filter mount. This lens with its large amount of optical glass, 
and attendant mass provides high stabilization during the 
exposure. Thus, significantly longer  exposure times can be 
obtained handheld with good results, a special benefit for 
photojournalism. Equally beneficial is the fast speed of f/2.8, 
ensuring a bright viewfinder image thus easing the image 
composition.
Preferred use: spectacular super-wide vistas, advertising, 
images that depict sheer expanse, dynamic landscapes, travel 
and tourism, photojournalism, photos to be taken in crammed 
spaces
Cat. No. of lens 10 47 68 Entrance pupil*
Number of elements 15 Position W = 24.4 mm behind the first lens vertex
Number of groups 10 T = 25.2 mm behind the first lens vertex
Max. aperture f/2.8 Diameter W = 6.1 mm
Focal length W = 17.4 mm, T = 34.0 mm T = 11.8 mm
Negative size 24 x 36 mm Exit pupil*
Angular field 2w* 
W = width 92°, height 69°, diagonal 102° Position W = 59.6 mm in front of the last lens vertex
T = width 11°, height 7.1°, diagonal 65° T = 27.6 mm in front of the last lens vertex
Min. aperture 22 Diameter W = 35.0 mm
Camera mount Contax N T = 29.7 mm
Filter connection M 95 x 0.75 Position of principal planes*
Focusing range infinity to 0.5 m H W = 38.8 mm behind the first lens vertex
Working distance (between T = 45.4 mm behind the first lens vertex
mechanical front end of H' W = 21.1  mm behind the last lens vertex
lens and subject) W = 0.38 m, T = 0.38 m T = 22.3 mm behind the last lens vertex
Close limit field size W = 545 mm x 831 mm Back focal distance W = 38.5 mm
T = 268 mm x 400 mm T = 56.3 mm
Max. scale W = 1 : 22 Distance between first
T = 1 : 11.2 and last lens vertex* W = 103.7 mm
T = 87.8 mm
Weight 900 g
*at infinity