Carl Zeiss Vario-Sonnar T* 28-80 mm f/ 3.5-5.6 N Lens Volantino
Biogon
®
T* 2.8/28
56
CONTAX
®
G mount
The hallmark of Biogon® T* wide-angle lenses is
excellent image quality combined with a wide
initial aperture and a wide field angle. This type of
lens is not suitable for use with SLR cameras, as
its design requires a short back focal distance
(distance from the last lens vertex to the film
plane). An outstanding Biogon® T* lens has
been developed for the Contax G compact
cameras, incorporating the knowledge gained so
far in the design of this type of lens.
excellent image quality combined with a wide
initial aperture and a wide field angle. This type of
lens is not suitable for use with SLR cameras, as
its design requires a short back focal distance
(distance from the last lens vertex to the film
plane). An outstanding Biogon® T* lens has
been developed for the Contax G compact
cameras, incorporating the knowledge gained so
far in the design of this type of lens.
The focal length f = 28 mm of this lens makes it
ideal for photography where a dynamic
perspective is required. The lens is also suitable
for the close-range photography of interiors, as its
constantly high image quality and excellent
distortion correction extend up to the close range.
The Biogon® T* 2.8/21 lens has been designed
for use with the autofocus connection of the
Contax G compact cameras.
ideal for photography where a dynamic
perspective is required. The lens is also suitable
for the close-range photography of interiors, as its
constantly high image quality and excellent
distortion correction extend up to the close range.
The Biogon® T* 2.8/21 lens has been designed
for use with the autofocus connection of the
Contax G compact cameras.
Cat. No. of lens
10 49 29
Number of elements
7
Close limit field size
361 mm x 541 mm
Number of groups
5
Max. scale
1 : 15.0
Max. aperture
f/2.8
Entrance pupil*
Focal length
28.5 mm
Position
15.4 mm behind the first lens vertex
Negative size
24 x 36 mm
Diameter
10.0 mm
Angular field*
width 65°, height 46°,
Exit pupil*
diagonal 2w 74°
Position
13.5 mm in front of the last lens vertex
Min. aperture
22
Diameter
9.5 mm
Camera mount
Contax G
Position of principal planes*
Filter connection
M 46 x 0.75
H
13.5 mm behind the first lens vertex
Focusing range
infinity to 0.5 mm
H'
15.4 mm in front of the last lens vertex
Working distance (between mechanical front end of
Back focal distance
13.1 mm
lens and subject)
0.44 m
Distance between first
and last lens vertex
and last lens vertex
41.7 mm
Weight
150 g
* at infinity