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User English Manual for MC Zenitar
2.8/16 FISH-EYE Lens |
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Dear Customer
You have a chance to buy a
super wide-angle fish-eye lens — the MC ZENITAR-M 2,8/16
lens.
The special features of the lens allow to shoot original
pictures with angular field of view of 180°.
The lens features a high quality image and transmission of
the object small details.
The lens small dimensions and weight make it convenient to
take amateur and professional photographs.
We are confident that you will enjoy your lens when taking
various pictures.
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Attention
Remember that photographic lens is a complex optical
instrument, so it should be handled carefully.
Please spend a few minutes reading these handling rules and
operating procedures before using it.
Do not use the lens without light filters or light filter
compensator.
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Purpose
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The
MC ZENITAR-M 2.8/16 fish-eye lens is a short-focus, super
wide-angle, compact lens intended for reflex cameras with
M42X 1 lens fitting and 24X 36 mm frame size, as an
interchangeable lens.
It is irreplaceable when taking pictures with a large field
of view, such as architecture, landscape as well as group
scenes.
The lens should be used for shooting on black-and-white,
color and infrared films.
It is intended for use at a temperature of —15 to +45°C.
Specifications
Focal length ........................ 16 mm
Relative aperture
maximum ............................. f/2.8
minimum .............................. f/22
Angular field of view
(to the frame diagonal) ........... 180°
Flange/film distance ........….... 45.5 mm
Number of elements/groups ...... 11/7
Lens fitting thread ....................M42X1
Light filter mounting
thread ................................ M26.5X0.5
Minimum taking distance .......... 0.3 m
Lenght of the lens set on
¥
without caps (from the base
face) ..................................... 49 mm
Maximum diameter
of the lens mount...................... 63 mm
Weight without caps................ 0.31 kg |
Design
Lens
Optical Train
General View of the Lens
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1—mobile ring with
distance scale
2—mobile ring with diaphragm scale
3—fixed ring with depth-of-field scale |
4—light filter compensator
5—index R
6—central index
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Pre-starting Procedure
Before mounting the lens
on to the camera remove the lens rear cap. Make sure of the
light filter compensator 4 (a clear glass plate in holder,
screwed into the lens) being mounted on the lens.
Set the ring with distance scale on “¥”.
Carefully screw the lens into the camera as far as it will
go. In so doing central index mark 6 of fixed ring 3 will
come along the camera vertical axle.
If you are going to shoot with a light filter, unscrew the
light filter compensator 4 and replace it with a light
filter you have selected screwing it into the lens as far as
it will go. Shooting over, replace the light filter with the
compensator screwing it into the lens as far as it will go. |
Operating Procedure
Before taking pictures
remove the lens front cap.
Set the selected aperture on scale 2 against central index 6
on fixed ring 3. By rotating ring 1 focus the lens at the
object to be photographed so that the image will be sharp in
the view-finder. Focusing should be done at fully open
diaphragm. On pressing the camera release button the lens
automatic diaphragm will close down to a selected aperture
and the shutter will fire. Shutter firing over, the
diaphragm will restore to initial position.
When photographing groups of objects in different distances
from the camera, make use of depht-of-field scale 3. Index
marks on the depht-of-field scale, corresponding to the set
aperture value, will indicate sharp image limits on the
distance scale 1.
For instance, with the lens focused at 0.4 m and an aperture
of 11 the image will be sharp within the range from 0.3 to
0.6 m.
When using infra-red film the visually obtained sharpness
should be adjusted. To do this, focusing over, the value of
scale 1, set against central index 6, should be set against
index R. Because of large angular field of view of the lens,
you should not make use of a lens hood since it may result
in cutting the film. The most exciting feature of this lens
is its considerable barrel-shaped distortion which results
in distorting the shape of the object to be photographed in
case the latter is not in the centre of the frame. The
extensive straight lines passing through the frame centre
are transmitted without distortion and the lines remote from
the frame centre gain arched shape. If necessary, to
minimize the distortion, such lines should be arranged as
near to the frame centre as possible and if you want to
obtain a special effect by distortion they should be far
from the frame centre. When taking pictures of landscapes
the distortion effect is scarcely marked. The lens is
supplied with light filters. Yellow-green filter YG-2X is
used to improve tone transmission when taking landscapes on
black-and-white film at daylight and artificial illumination.
Yellow light filter Y-1.4X increases the contrast of the
light blue sky and weak clouds. It is used as well for
taking portraits outdoors.
Red light filter R-8X is used when taking pictures on
infrared film. When photographing on black-and-white film
the light filter allows to get daytime pictures as if taken
at night since the sky and verdure are reproduced dark. |
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Care of the Lens
Protect the lens from
jolts, moisture, dust, sharp temperature fluctuations and
long solar radiation effect (even closed in case).
When not in use, the front objective lens should be capped.
Take care of the coated lens surfaces since they may be
easily damaged at careless cleaning. Long-term effect of
moisture may as well damage the coatings of the film. Allow
the lens to warm-up closed in its case the moment it is
brought indoors from cold to avoid sweating of its optical
details. When taking pictures in frosty weather, it is
better to keep the camera with lens under your
street-clothes and take it out only for the time of shooting.
Remove dust from the lens surfaces with a jet of air from a
rubber bulb or with a clean soft degreased hairbrush. Dirt
on the lens surfaces should be removed with a stick-held
cotton wool wad free of hard inclusions. Moisten the wad
slightly with rectified alcohol, petroleum or sulphuric
ether or in a mixture of both. Do not clean the lens
surfaces with other solvents. After moistening the wad
should be dried with a clean white cloth. Optical surfaces
should be cleaned in circular movements, gradually passing
from the lens centre to its periphery. The wad should be
often changed. Do not use a wad held on a metal stick since
it may damage the lens.
Should the lens optical surfaces be too dirty to clean them
yourself or should the lens come out of order, take it to a
repair shop.
Do not disassemble the lens on your own.
The packed lens may travel by any kind of transport within
the temperature interval from —50 to +50° C. The lens should
be protected from atmospheric precipitation and transport
damage.
After transportation in winter the lens should be kept
packed at a room temperature of no less than 3h. The packed
lens should be stored in a heating room at a temperature of
+5 to +40°C and air relative humidity of no more than 80% at
+25° C, as well as when the air is free of acidic, alkaline
and other corrosive impurities. Before packing the lens,
set the ring with distance scale on “¥”
and with diaphragm scale on ,,22". When storing the lens
should be capped on either sides.
Light filters should be stored in special seats.
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