Carl Zeiss Touit 12 mm f/ 2.8 Lens Scheda Tecnica

F-Distagon

®

 T

* f/2.8 - 16 mm

  

The 16 mm F-Distagon

®

 f/2.8 lens is a super 

wide-angle lens of the so-called fisheye type with 
high speed and excellent image quality. With 
regard to its use in general photography, the focal 
length was chosen in such a way that the 35 mm 
format is fully utilized. 
The relation between image height u and angular 
field w is given by u = 2 f x sin w/2 (equivalent 
projection). Most important for general 
photography are, above 

all, the excellent image quality and the remarkable 
image field illumination at full aperture, i.e. when 
the incredibly high speed of this lens is fully utilized. 

This super wide-angle lens is well suited for 
panorama photography where distortion 
phenomena can be avoided by skilful camera work, 
for detail photography where space is extremely 
limited and for photographs for which the extreme 
wide-angle perspective or distortion are essential 
elements of the picture.

Focusing range:

∞

 to 0.3 m

Number of elements:

8

Entrance pupil:

Number of groups:

7

Position:

15.6 mm behind the first lens vertex

Max. aperture:

f/2.8

Diameter:

5.5 mm

Focal length:

15.8 mm

Exit pupil:

Negative size:

24 x 36 mm

Position:

30.5 mm in front of the last lens vertex

Angular field 2w*:

180º diagonal

Diameter:

23.9 mm

Mount:

focusing mount with bayonet;

Position of principal planes:

TTL metering either at full aperture

H:

27.8 mm behind the first lens vertex

or in stopped-down position.

H':

21.8 mm behind the last lens vertex

Aperture scale:

2.8 - 4 - 5.6 - 8 - 11 - 16 - 22

Back focal distance*:

37.6 mm

Filter connection:

built-in filter turret

Distance between first and

(UV; Or 57; Y 50; B 11)

last lens vertex:

66.5 mm

Weight:

approx. 460 g

* at 

∞