Untitled Document
The Russian ZM-6A
is a classic sample of Soviet-era engineering
and workmanship. It is a 500 mm telephoto mirror lens based on the design of
a known Soviet engineer Maksutov. This lens succeded the original MTO-500 lens,
which was a heavy, brass unit. "MTO"
stands for "Maksutov's Tele Ob'ektiv". ZM
stands for Zerkal'nyi (Mirror) Maksutov's. The ZM-6A was much improved, it is
a faster lens (1:6.3 vs. 1:8 in the MTO-500). It is also lighter, multicoated,
and has a built-in sliding lens hood.
Lens' Specifications
| |
500 mm |
| |
1:6.3 (fixed, this design does not allow for variable aperture) |
| |
5?
|
| |
6
m - Infinity (the
lenses of this design may focus past infinity, this is done to compensate
for thermal expansion)
|
| |
M95x1 (4 filters are included) |
- Optical registration (back focus)
|
45.2?
0.02 mm |
| |
M42 |
| |
Max
diameter: 100mm (4"), Length: 165mm (6.5") |
- The glass is coated; the barrel is finished in tough black enamel
|
This ZM-6A
was made in 1991. It is in mint condition,looks unused. The glass is clear and
clean. The focusing is smooth.
You will need a sturdy tripod to
shoot with this lens.
The set includes:
- ZM-6A Lens with buil-in lens shade.
- Four filters (Yellow/Green 5.6x,
Orange 4x, UV 1.4x, Neutral Density 4x)
- Metal front screw-in lenscap and
plastic rear lenscap.
- Vinyl Case
The lens is shown mounted on a Zenit
12xp (not included). This ZM-6A can be used with any M42 camera.
