Carl Zeiss Touit 12 mm f/ 2.8 Lens Техническое Руководство
Planar
®
T* 1.4/50
48 to film
80
55
CONTAX
®
N1
The Planar® lens from Carl Zeiss is the most
successful lens design ever conceived. This lens type
is the basis of almost all professional "workhorse"
lenses on earth – and in space.
The Planar® T* 1.4/50 autofocus lens is the fastest
standard focal length developed for the Contax® N1
system. At the same time, it is the smallest and
lightest lens in the system.
The lens provides a perspective (the ratio between the
size of details in the foreground and in the background)
which is similar to how the human eye sees the world.
This makes it the ideal lens for many photographic
tasks, in particular for documentary work where it is
important to capture many details, as the optical
performance of the Planar® T* 1.4/50 lens is so high
that it allows even the potential of high-resolution films
to be fully utilized.
successful lens design ever conceived. This lens type
is the basis of almost all professional "workhorse"
lenses on earth – and in space.
The Planar® T* 1.4/50 autofocus lens is the fastest
standard focal length developed for the Contax® N1
system. At the same time, it is the smallest and
lightest lens in the system.
The lens provides a perspective (the ratio between the
size of details in the foreground and in the background)
which is similar to how the human eye sees the world.
This makes it the ideal lens for many photographic
tasks, in particular for documentary work where it is
important to capture many details, as the optical
performance of the Planar® T* 1.4/50 lens is so high
that it allows even the potential of high-resolution films
to be fully utilized.
The Planar® T* 1.4/50 lens incorporates special, high
refractive glass types. Even at initial aperture, the
Planar® T* 1.4/50 lens provides remarkably high
image quality. This makes the Planar® T* 1.4/50 lens
the ideal lens for photography where a shallow depth
of field is desired or in low-light situations where the
full aperture has to be used.
refractive glass types. Even at initial aperture, the
Planar® T* 1.4/50 lens provides remarkably high
image quality. This makes the Planar® T* 1.4/50 lens
the ideal lens for photography where a shallow depth
of field is desired or in low-light situations where the
full aperture has to be used.
Preferred applications:
All-purpose lens, documentation, available-light
photography, traveling, editorials, flash-free
photography of interiors
All-purpose lens, documentation, available-light
photography, traveling, editorials, flash-free
photography of interiors
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Cat. No. of lens 10 22 32
Number of elements 7 Close limit field size 186 mm x 283 mm
Number of groups 6 Max. scale 1 : 7.7
Max. aperture f/1.4 Entrance pupil*
Focal length 51.8 mm Position 27.1 mm behind the first lens vertex
Negative size 24 x 36 mm Diameter 35.9 mm
Angular field* width 39°; height 33°; Exit pupil*
Number of elements 7 Close limit field size 186 mm x 283 mm
Number of groups 6 Max. scale 1 : 7.7
Max. aperture f/1.4 Entrance pupil*
Focal length 51.8 mm Position 27.1 mm behind the first lens vertex
Negative size 24 x 36 mm Diameter 35.9 mm
Angular field* width 39°; height 33°; Exit pupil*
diagonal 2w 46° Position 28.4 mm in front of the last lens vertex
Min. aperture 16 Diameter 48.9 mm
Camera mount Contax N1 Position of principal planes*
Filter connection M 67 x 0.75 H 38.5 mm behind the first lens vertex
Focusing range
Camera mount Contax N1 Position of principal planes*
Filter connection M 67 x 0.75 H 38.5 mm behind the first lens vertex
Focusing range
infinity to 0.45 m H' 13.7 mm in front of the last lens vertex
Working distance (between mechanical front end of Back focal distance 38.1 mm
lens and subject) 0.40 m Distance between first
lens and subject) 0.40 m Distance between first
and last lens vertex 42.3 mm
Weight 310 g
Weight 310 g
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* at infinity