3M-5CA 8/500 Telephoto Lens
Description:
3M-5CA 8/500 Telephoto Lens serves as an interchangeable lens for the
Zenit still cameras with a curtain shutter, used to take close-ups of remote
objects, inaccessible parts of terrain, architectural details and sports competitions,
ideal for photographic hunting.
3M-5CA 8/500 Telephoto Lens Specifications:
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Focal length,mm
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500
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|
Maximum aperture
|
1:8
|
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Angle of view, deg.
|
5
|
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Minimum focusing range,m
|
4
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Working distance,mm
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45,5
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Camera mount thread
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M42 x 1
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Mount thread for screwed-in attachments
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M72 x 0,75
|
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Resolution, mm-1, min
- in centre
- off centre
|
42
20
|
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Light transmission factor, min.
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0,75
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Light diffusion factor, max.
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0,03
|
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Overall dimensions, mm
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Diam. 83 x 139
|
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Mass, kg, max
|
0,620
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You may use the lens as Hand Telescope
if you purchase Tourist
- FL (an eyepiece attachment).
You may also use the lens for Astrophotography if you
purchase TeleconverterTKL2.
The set increases the focal length to 1000mm.
See more about how to use lenses
with various cameras here >>
Mount Adapter FD/M42
For
using Canon cameras (A-1, AE-1 Program, F-1, FTb and others) with M42 lenses
(Praktica, Zenit). M42 lenses are not interchangeable with FD optics, as they
have different flange bases. This difference is compensated by the thickness
of the adapter, and this fact let M42 lenses work with FD cameras in usual manner.
You
should remember that the pusher with the fixed ring doesn’t work, so diaphragm
control of the lens is set manually. This adapter can work with lenses having
both only automatic diaphragm (A) and selector A/M (automatic/manual diaphragm).
It is possible to use Macro rings and other accessories.
Settings:
- Put red marks on outer and
inner rings of the adapter with red mark on the lens collar together.
- Turn outer ring clockwise
till the end.
- Set M42 lens.
Removing:
Removing of the adapter is made in inverse.
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