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Ontrackz
Tinkerer
Username: Ontrackz
Post Number: 1
Registered: 06-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 20, 2007 - 12:31 pm: | 
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Dear all,
One of the diafragm/iris springs of my pancolar lens is defective. It is very much elongated. It was left for an extended period in the elongated position. Anyway, any suggestions for a replacement part? I tried some springs I had on hand, but it seems they were either too strong or too weak. (not opening it at all, or closing of iris is prevented).
Thank you all!
Fons |
Eugen_mezei
Tinkerer
Username: Eugen_mezei
Post Number: 18
Registered: 08-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, September 15, 2007 - 06:31 pm: |
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Unfortunately I can not help, but can you tell me which is the elongated position? I ahve the Pancolar myself and it would be useful how to store it so this do not happen to me too.
Eugen |
Aka
Tinkerer
Username: Aka
Post Number: 2
Registered: 09-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, September 28, 2007 - 03:27 am: |
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There are two springs, I'd try to exchange them in case they're equal. If this doesn't help, you have (apart from finding a substitute) to shorten the spring: anneal + cut off + temper back. But this is complicated as far as you could easily make this spring too tight or too weak, resulting new/old problems.
To Eugen_mezei: no way to avoid tension as there are 2 springs, either way - one is always under tension. I'm talking about zebra version. Later version I don't know. |
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