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Thomas T
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 18, 2006 - 11:45 pm: | 
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The double image in my Contax IIa can not be lined up correctly. What should I do to calibrate it? Thank you. |
rick
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 19, 2006 - 09:33 am: |
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Is it off vertically? ZI didn't provide an adjustment for that, presumably because they KNEW it was absolutely perfect and would never drift, and it hadn't been necessary in the prewar models.
Unfortunately the design is different in the IIa and it can drift. The RH rangefinder lens is set in pitch, in perfect register (not sure how they did that). When the pitch shrinks (which it has done by now), the lens is loose and can move. What you need to do is get the lens into its correct position and stick it back down. I use contact cement for this, but it also shrinks a bit as it dries so it's a very fussy job.
There is an adjustment for lateral alignment (focus), but you need to make sure the lens is secure before wasting your time on that....
: ) = |
Mike Kovacs
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, March 21, 2006 - 10:33 am: |
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I had a Contax IIA I did (had many emails with Rick) where the RH rangefinder lens was set tightly in the pitch, but still it was out.
I was able to put shims under the pivot point and restore perfect vertical alignment on this one.
Also, its quite common to have a weak return spring if the image doesn't move going from minimum back towards infinity. |
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