Carl Zeiss Distagon T* 28 mm f/ 2 Z Lens Fiche De Données
Distagon
®
T
* f/2.8 - 28 mm
This Distagon
®
lens for Contax
®
35 mm reflex
cameras has been developed by Zeiss for all those
who need a compact lens with an angular field of
74º and high image quality, but who do not require
extremely high speed. This lens therefore meets the
request voiced by many photographers for a lens
with a relatively wide angular field and an initial
aperture of f/2.8 which is perfectly adequate for
most purposes. As the name Distagon
74º and high image quality, but who do not require
extremely high speed. This lens therefore meets the
request voiced by many photographers for a lens
with a relatively wide angular field and an initial
aperture of f/2.8 which is perfectly adequate for
most purposes. As the name Distagon
®
indicates,
this is a lens where the distance between the last
lens surface and the film plane is longer than the
focal length, allowing unobstructed motion of the
reflex mirror.
lens surface and the film plane is longer than the
focal length, allowing unobstructed motion of the
reflex mirror.
This lens therefore belongs to the class of so-called
retrofocus-type lenses. The lens is a full-fledged
member of the Distagon
member of the Distagon
®
family and displays
excellent image quality and remarkable image field
illumination even at full aperture. The distance
between the first and the last lens vertex is
exceptionally short.
Like its sister lens with a focal length of 35 mm, the
applications of this Distagon
illumination even at full aperture. The distance
between the first and the last lens vertex is
exceptionally short.
Like its sister lens with a focal length of 35 mm, the
applications of this Distagon
®
lens are so varied
that it can be described as a universal lens for all
fields of photography.
fields of photography.
Cat. No. of lens: 10 48 55 Filter connection: clip-on-filter, diameter 59 mm
Number of elements: 7 screw-in type, thread M 55 x 0.75
Number of groups: 7 Weight: approx. 280 g
Max. aperture: f/2.8 Focusing range:
Number of elements: 7 screw-in type, thread M 55 x 0.75
Number of groups: 7 Weight: approx. 280 g
Max. aperture: f/2.8 Focusing range:
∞
to 0.25 m
Focal length: 28.5 mm Entrance pupil:
Negative size: 24 x 36 mm Position: 22.9 mm behind first lens vertex
Angular field 2w: 75º diagonal Diameter: 10.0 mm
Mount: focusing mount with bayonet; Exit pupil:
Negative size: 24 x 36 mm Position: 22.9 mm behind first lens vertex
Angular field 2w: 75º diagonal Diameter: 10.0 mm
Mount: focusing mount with bayonet; Exit pupil:
TTL metering either at full aperture Position: 16.3 mm in front of last lens vertex
or in stopped-down position. Diameter: 19.3 mm
Aperture priority/Shutter priority/ Position of principal planes:
Automatic programs H: 36.4 mm behind first lens vertex
(Multi-Mode Operation) H': 9.4 mm behind last lens vertex
or in stopped-down position. Diameter: 19.3 mm
Aperture priority/Shutter priority/ Position of principal planes:
Automatic programs H: 36.4 mm behind first lens vertex
(Multi-Mode Operation) H': 9.4 mm behind last lens vertex
Aperture scale: 2.8 - 4 - 5.6 - 8 - 11 - 16 - 22 Back focal distance: 37.8 mm
Distance between first and
last lens vertex: 54.0 mm
last lens vertex: 54.0 mm