Carl Zeiss Touit 12 mm f/ 2.8 Lens Guide De Spécification
Hologon
®
T* 8/16
29 to film
53
11
CONTAX
®
G mount
Using the traditional Hologon
®
ultra-wide-angle
lens as a basis, Carl Zeiss has designed a 16 mm
Hologon
Hologon
®
f/8 lens for the Contax G compact
cameras. This interchangeable wide-angle lens is
virtually distortion-free and provides superior
image quality.
In view of the extreme field angle, a loss in
brightness towards the image edges is inevitable.
For this reason, a Contax gradation filter 4x is
available to eliminate this effect.
virtually distortion-free and provides superior
image quality.
In view of the extreme field angle, a loss in
brightness towards the image edges is inevitable.
For this reason, a Contax gradation filter 4x is
available to eliminate this effect.
The short focal length of 16 mm and the fixed
aperture of f/8 of the Hologon
aperture of f/8 of the Hologon
®
T* lens often
allow photography using the fix-focus setting. The
wide field angle of this lens opens up interesting
perspectives to the Contax G photographer:
whether it is architectural, advertising, fashion or
landscape photography, pictures taken with this
lens will always capture the viewer's attention.
wide field angle of this lens opens up interesting
perspectives to the Contax G photographer:
whether it is architectural, advertising, fashion or
landscape photography, pictures taken with this
lens will always capture the viewer's attention.
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Cat. No. of lens
10 49 27
Number of elements
5
Close limit field size
675 mm x 1012 mm
Number of groups
3
Max. scale
1 : 28.1
Max. aperture
f/8
Entrance pupil*
Focal length
16.5 mm
Position
20.8 mm behind the first lens vertex
Negative size
24 x 36 mm
Diameter
2.1 mm
Angular field*
width 95°, height 72°,
Exit pupil*
diagonal 2w 105°
Position
9.5 mm in front of the last lens vertex
Min. aperture
8 (fixed)
Diameter
2.0 mm
Camera mount
Contax G
Position of principal planes*
Filter connection
special bayonett for
H
20.6 mm behind the first lens vertex
Contax gradation filter
H'
9.7 mm in front of the last lens vertex
Focusing range
infinity to 0,3 m
Back focal distance
6.8 mm
Working distance (between mechanical front end of
Distance between first
lens and subject)
0.26 m
and last lens vertex
31.7 mm
Weight
120 g
_________________________________________________________________________________________
* at infinity