PRODUCT INFORMATION 
ZEISS BIOGON T* f/2.8 28mm ZM
Classic, wide-angle focal length
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| This
classic, wide-angle focal length with a moderate perspective complements
the standard 50 mm focal length. The Biogon T* 2.8/28 ZM exhibits crisp
detail without distortion at full apertures, even at the close-focus
range. The optical construction minimizes flare, enabling photography
against a strong back light without compromising image quality.
This lens has the widest angle of view that can be used with the integrated viewfinder on the Zeiss Ikon rangefinder camera; an additional 25/28 mm viewfinder is available. Combined with a digital rangefinder camera with a 1.3 crop factor, the lens has an effective focal length of 36 mm ideal for reportage style photography. The Biogon T* 2.8/28 ZM is ideal for travel photography and is also well suited for group and interior photographs when space is at a premium and wide-angle distortion needs to be minimized.
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Technical Data |
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Focal
length |
28
mm |
|
Aperture
range |
f/2.8
~ f/22 (1/ 3 stop intervals) |
|
Number
of elements / groups |
8
/ 6 |
|
Focusing
range |
0.5
m (1.6 ft) ~ ∞ |
|
Angular
field* (diag. / horiz. / vert.) |
75
/ 65 / 46 ° |
|
Coverage
at close range |
37
x 55 cm (15 x 22") |
|
Image
ratio at close range |
1:16 |
|
Filter-thread |
M
46 x 0.75 |
|
Length
(with caps) |
62
mm (2.4") |
|
Diameter |
53
mm (2.1") |
|
Weight |
230
g (8.1 oz.) |
|
Camera
mount |
ZM
(M bayonet) |
|
Optional
accessories |
Lens
Shade M 46 Add-on
viewfinder 25 / 28 mm |
