| Author |
 Topic  |
|
Christopher Sabine
ChrisS
Spain
29 Posts |
 Posted - Feb 18 2012 : 2:32:08 PM
|
Hello,
About a year ago I bought a very early alloy Mir-1 (1:2.8, F=3.7cm) in ZM39, s/n 000267, without the 1958 Brussels Grand Prix engraving of course. Mir-1 s/n 003628 has a passport dated Feb 1957, so I guess mine is probably 1956. It was described as having various problems and not working correctly but was very cheap and being so early I thought it worth buying. Optically it is really quite good, external condition is not too bad at all with some external light scuffs but all engravings are OK with no missing fill, HOWEVER there the good bits end!
It has obviously been dismantled at some time and re-assembled incorrectly. The focussing is way out from the scale and appears to have no stop (focussing ring turns more than 360ºbut does eventually come to a rather mushy stop at either end), it also goes out-of-focus either side of infinity - presumably assembled in the wrong helix (it is actually usable if you disregard the scale). The aperture and stop-down rings work after a fashion, but are way off the index mark.
How is the little asymetric shade by the rear element supposed to be aligned? I have looked at a number of illustrations of these lenses and they all seem to have this shade aligned differently.
I would like to get the lens re-assembled properly, but have never tackled anything like this before. I feel sure this lens can be put right and is well worth salvaging - but at the moment it remains with the rest of my early Zenit collection as an interesting early Zenit lens.
Any help or guidance would be much appreciated.
ATB & thanks in advance, Chris. |
|
Alex_Rus
Russia
35 Posts |
|
Christopher Sabine
ChrisS
Spain
29 Posts |
Posted - Feb 19 2012 : 1:19:41 PM
|
Hello Alex Rus - Many thanks for your helpful reply.
I cannot get images 1 & 5 to show, but it gives me a good start and also an idea what I´m in for!
Thanks again & ATB, Chris. |
 |
|
Alex_Rus
Russia
35 Posts |
|
Christopher Sabine
ChrisS
Spain
29 Posts |
Posted - Feb 21 2012 : 10:40:21 AM
|
Hello again Alex Rus - Many thanks for the 2 images. I now have the full set but will need to get a different lens spanner as the one I have has angled ends.
The rear ring on my lens has 4 holes at 90º to eachother. 2 opposing ones have small screws and the other 2 are empty. Is it necessary first to remove the 2 screws? The pictures don´t show this so perhaps not.
Thanks again & ATB, Chris. |
|
|
Alex_Rus
Russia
35 Posts |
Posted - Feb 21 2012 : 1:35:13 PM
|
>>Is it necessary first to remove the 2 screws?
These 2 screws need to screw a few turns, not to remove fully
|
|
|
| |
Topic |
|
Early Mir-1 problems - help please
