My lovely contax distagon 35mm encountered a little problem recently.
The front end of the lens barrel (in red) is moving a bit, up and down.
It is only the barrel that moves so it doesn't affect photo quality and focusing.
I searched the web about adjusting infinity focus of the lens because it has a bit of focusing issue on my 5Dmk2.
and found the screws under the focusing ring wrap.
There were screws placed around the ring for adjusting the infinity focus but another 2 vertical ones (which I do not have a clue what do they do) and it seems it has been loosened before, little marks are seen in the picture.
Anybody know how to fix this situation or encountered this problem before?
Thanks in advance.:(