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Anirban
Tinkerer
Username: Anirban
Post Number: 5
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 21, 2006 - 11:40 pm: | 
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Hi Everyone,
This lens was not correctly focussing to infinity, so I fixed that as described for the Super Takumar in an article on this website (focus adjustment was very similar).
The lens focusses correctly now, so focussing on a 5 ft. obj-to-film distance aligning correctly at the 5ft mark and a the infinity mark aligning correctly when focussing on a conifer half a mile away. However, I see that the infinity mark goes past the expected end point.
The focus distance scale has a tab that is stopped from going past the infinity mark by a short thick pin (don't know the technical name) on the barrel. I thought the pin might be bent, but that is not so.
Is there any way of adjusting the position of the pin? Or is this normal on this lens?
Thanks. |
Ethostech
Tinkerer
Username: Ethostech
Post Number: 61
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 29, 2006 - 07:33 am: |
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When the lens is correctly focused on infinity - the other scaled distances will be correct. The rotational position of the focusing barrel is adjustable so that when the optical focus has been acurately established by ground-glass screen in filmplane method, the focussing barrel can then be installed with correct indexing - and locked up with the set-screws.
I have an Article posted on this forum as alluding to the Super Takumar ƒ3.5 135mm - and the funamental processes are the ame. |
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