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:
|
Focal length,mm
|
500
|
|
Maximum aperture
|
1:8
|
|
Angle of view, deg.
|
5
|
|
Minimum focusing range,m
|
4
|
|
Working distance,mm
|
45,5
|
|
Camera mount thread
|
M42 x 1
|
|
Mount thread for screwed-in attachments
|
M72 x 0,75
|
|
Resolution, mm-1, min
- in centre
- off centre
|
42
20
|
|
Light transmission factor, min.
|
0,75
|
|
Light diffusion factor, max.
|
0,03
|
|
Overall dimensions, mm
|
Diam. 83 x 139
|
|
Mass, kg, max
|
0,620
|
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 >>
M42 - K mount adapter
This lens mount adapter allows M42 Universal Screw Mount to fit onto a Pentax
K mount adapter. Although the lens will fit physically, automatic diaphragm,
auto-focusing, or any other functions will not operate correctly while using
this adapter. In this case "stop-down mode" will need to be used when metering
since the lens does not have the ability to have its aperture controlled by
the camera body.
M42 - K mount adapter specifications:
| Adapter Type |
M42 Universal Screw Mount to Pentax K Mount adapter |
| Lens Compatibility |
All M42 screw mount lenses |
| Camera compatibility |
Pentax K mount bodies, MF SLRs, such as K1000,
ME super, DSLRs such as *ist DS, and *ist D |
| Focus Range |
Limited |
| Allow Metering |
Stop-down metering, camera dependant |
| TTL flash metering |
Yes |
|
