Industar 61L/Z Lens
Description:
Industar 61L/Z Lens serves as an interchangeable lens for the Zenit
still cameras with a curtain shutter and manual aperture control, belongs to
the type of universal lenses, gives good results and features a uniform distribution
of resolution off centre.
Industar 61L/Z Lens Specifications:
| Focal length, mm |
50 |
| Maximum aperture |
f2,8 |
| Angle of view, deg. |
46 |
| Focusing range, m |
0,3 - inf |
| Aperture range |
f2,8 to f16 |
| Working distance, mm |
45,5 |
| Camera mount thread |
M42 x 1 |
| Mount-thread for screwed-in attachements |
M49 x 0,75 |
Resolution at infinity distance,mm-1,
min
- in centre
- off centre |
44
30 |
| Light transmission factor, min |
0,92 |
| Light diffusion factor, max |
0,015 |
| Overall dimensions, mm |
Diam. 57 x 59 |
| Mass, kg, max |
0,225 |
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 |
|
