Canon EF 50 mm f/ 1.2 L USM Lens 说明手册
Distagon
®
T* 3.5/55
64 to film
81
75
CONTAX
®
645
The Distagon® T*3.5/55 lens is the compact and
light-weight all-purpose wide-angle lens in the Contax
645 autofocus system. The focal length of 55 mm on a
Contax 645 camera produces images similar to those
from 35 mm lenses on 35mm SLRs.
The Distagon® T*3.5/55 lens consists of 7 lens
elements. It is of rather compact, light-weight design
and features smooth corner-to-corner illumination.
Image quality is excellent over the entire frame from
full opening to small apertures.
The Distagon® T* 3.5/55 lens can be stopped down to
f/32, thus enabling stunning depth of field effects.
Distortion of the Distagon® T* 3.5/55 lens is kept
remarkably low - a particular strength of retrofocus
wide angle lenses from Carl Zeiss.
light-weight all-purpose wide-angle lens in the Contax
645 autofocus system. The focal length of 55 mm on a
Contax 645 camera produces images similar to those
from 35 mm lenses on 35mm SLRs.
The Distagon® T*3.5/55 lens consists of 7 lens
elements. It is of rather compact, light-weight design
and features smooth corner-to-corner illumination.
Image quality is excellent over the entire frame from
full opening to small apertures.
The Distagon® T* 3.5/55 lens can be stopped down to
f/32, thus enabling stunning depth of field effects.
Distortion of the Distagon® T* 3.5/55 lens is kept
remarkably low - a particular strength of retrofocus
wide angle lenses from Carl Zeiss.
With these features the Distagon® 3.5/55 lens is the
ideal lens for photojournalistic ”street photography”
with the Contax 645 AF camera. Another standard task
in professional medium format photography is taking
pictures of large groups of up to 100 people. In this
case a moderate wide angle with high image quality in
the entire frame and low distortion is required and the
Distagon® T* 3.5/55 lens is the lens of choice for the
Contax 645 AF.
ideal lens for photojournalistic ”street photography”
with the Contax 645 AF camera. Another standard task
in professional medium format photography is taking
pictures of large groups of up to 100 people. In this
case a moderate wide angle with high image quality in
the entire frame and low distortion is required and the
Distagon® T* 3.5/55 lens is the lens of choice for the
Contax 645 AF.
Preferred use: photojournalistic work, ”street
photography”, people, groups, weddings, indoor
photography
photography”, people, groups, weddings, indoor
photography
Cat. No. of lens 10 49 59
Number of elements 7 Close limit field size 230 mm x 330 mm
Number of groups 7 Max. scale 1 : 5.5
Max. aperture f/3.5 Entrance pupil*
Focal length 55.0 mm Position 28.7 mm behind the first lens vertex
Negative size 41.5 x 56 mm Diameter 15.5 mm
Angular field 2w* width 54°; height 41°; Exit pupil*
Number of elements 7 Close limit field size 230 mm x 330 mm
Number of groups 7 Max. scale 1 : 5.5
Max. aperture f/3.5 Entrance pupil*
Focal length 55.0 mm Position 28.7 mm behind the first lens vertex
Negative size 41.5 x 56 mm Diameter 15.5 mm
Angular field 2w* width 54°; height 41°; Exit pupil*
diagonal 65° Position 20.3 mm in front of the last lens vertex
Min. aperture 32 Diameter 24.3 mm
Camera mount Contax 645 Position of principal planes*
Filter connection M 72 x 0.75 mm H 48.3 mm behind the first lens vertex
Focussing range
Camera mount Contax 645 Position of principal planes*
Filter connection M 72 x 0.75 mm H 48.3 mm behind the first lens vertex
Focussing range
infinity to 0.45 m H' 10.0 mm behind the last lens vertex
Working distance
Back focal distance 65.0 mm
(between mechanical
Distance between first
front end of lens and last lens vertex* 66.4 mm
and subject) 0.31 m Weight 500 g
and subject) 0.31 m Weight 500 g
*at infinity