Carl Zeiss Distagon 35/3.5 C645 Lens Volantino
PC-Distagon
®
T
* f/2.8 - 35 mm
The 35 mm PC-Distagon
®
f/2.8 lens is a
wide-angle lens, the 63 mm field diameter of which
is considerably larger than needed for the 24 x 36
mm format. This reserve permits the perspective to
be checked and corrected by shifting the lens
before shooting. In this way distorted perspective
such as converging lines can be prevented or an
interfering foreground suppressed.
The lens can be displaced by 10 mm upwards and
downwards by simply pressing it with a finger.
After the ring with the degree scale has been pulled
back, the lens can also be rotated at 15º intervals,
allowing lens shift in parallel with either the long or
the short side of the format.
is considerably larger than needed for the 24 x 36
mm format. This reserve permits the perspective to
be checked and corrected by shifting the lens
before shooting. In this way distorted perspective
such as converging lines can be prevented or an
interfering foreground suppressed.
The lens can be displaced by 10 mm upwards and
downwards by simply pressing it with a finger.
After the ring with the degree scale has been pulled
back, the lens can also be rotated at 15º intervals,
allowing lens shift in parallel with either the long or
the short side of the format.
Special scales permit the position set to be
readjusted at any time.
High image quality is a matter of course in the
wide-angle, retro-focus lenses featuring the
trademark Distagon
readjusted at any time.
High image quality is a matter of course in the
wide-angle, retro-focus lenses featuring the
trademark Distagon
®
. To compensate for
aberrations in close-ups, the position of individual
optical elements is automatically changed via a cam
when focusing (floating element). When shifting
the lens, it is inevitable that the exit pupil will also
be shifted laterally from the focusing screen. The
rays emerging from the pupil therefore strike the
metering field of the camera's exposure sensor at a
different angle. The exact shutter speed must
therefore be set on the camera while the lens is still
in its "normal position".
optical elements is automatically changed via a cam
when focusing (floating element). When shifting
the lens, it is inevitable that the exit pupil will also
be shifted laterally from the focusing screen. The
rays emerging from the pupil therefore strike the
metering field of the camera's exposure sensor at a
different angle. The exact shutter speed must
therefore be set on the camera while the lens is still
in its "normal position".
Cat. No. of lens:
10 48 61
Focusing range:
∞
to 0.3 m
Number of elements:
9
Aberration correction for close range by floating element
Number of groups:
9
Entrance pupil*:
Max. aperture*:
f/2.8
Position:
28.6 mm behind the first lens vertex
Focal length*:
35.2 mm
Diameter*:
12.6 mm
Negative size:
24 x 36 mm
Exit pupil*:
Angular field 2w*:
63/83º diagonal
Position:
19.0 mm in front of the last lens vertex
Mount:
focusing mount with bayonet;
Diameter*:
24.2 mm
Possibility of correcting distorted
Position of principal planes:
perspective: max. 10 mm
H:
45.1 mm behind the first lens vertex
displacement. TTL metering in
H':
12.4 mm behind the last lens vertex
stopped-down position.
Back focal distance*:
47.6 mm
Aperture scale:
2.8 - 4 - 5.6 - 8 - 11 - 16 - 22
Distance between first and
Filter connection:
clip-on filter, diameter 70 mm
last lens vertex:
82.5 mm
Weight:
approx. 740 g
* at
∞