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06-15-2009, 05:16 AM   #1
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Slight dint in my Takumar.. What to do?

Hey guys, i was a little too excited purchasing my Super Tak 55/1.8 and overlooked a very slight dint on the front of it, so i cannot screw my filter into the thread.

Any ideas..? I don't really want to take to it with pliers and cloth but that's the only thing i can think of at the moment. Should i take it to a specialist?

Thanks.

06-15-2009, 05:37 AM   #2
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I think that any place that does camera/lens repairs could most likely fix it for you. There are special tools just for the purpose.
06-15-2009, 06:01 AM   #3
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You can buy a filter ring vice which is the correct tool or some people have success using wooden blocks and a hammer.

I would search for a cheap broken/fungus infected 55/1.8 and salvage the part, it will be a lot cheaper (and better) then getting it repaired.
06-15-2009, 10:04 AM   #4
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I've had success straightening a few bent (aluminium) filter threads with the following method. I've cut a block of wood to match the round shape of the lens exactly the size of the outer diameter of the filter thread. Then I've used a piece of hard wood or hard plastic (once I used the handle of a screwdriver) and just pressed hard from the inside to bend the filter thread back to it's original form. This requires a fair amount of force and it may seem first that nothings happening but it's a slow process and can be done if you have enough strenght.

06-15-2009, 10:16 AM   #5
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QuoteOriginally posted by AlpenTak Quote
You can buy a filter ring vice which is the correct tool or some people have success using wooden blocks and a hammer.

I would search for a cheap broken/fungus infected 55/1.8 and salvage the part, it will be a lot cheaper (and better) then getting it repaired.
The second suggestion won't work until you have already gotten the filter threads in decent shape, or destroyed the "name" trim ring. The normal disassembly process is to unscrew the name ring, which most of the time uses the same filter threads. The name trim ring covers the screws that hold the filter ring on. Catch-22. (What did they call this situation before that novel?) This situation is why the filter threads are important even if you never intend to use a filter.

I have used an old filter to trace an arc onto wood and cut the wood with a band saw. Then you have a piece that fits on the outside (after a bit of sanding) and an inside piece. Getting the dent out can require considerable force, often destroying the inside wood. Some lenses don't give you any working room. I can either repair the threads entirely, or get the threads in good enough shape to screw on an old filter with no glass. Then the filter's threads work for daily use and I can probably get the lens apart with some extra effort.
06-15-2009, 11:32 AM   #6
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QuoteOriginally posted by Just1MoreDave Quote
The second suggestion won't work until you have already gotten the filter threads in decent shape, or destroyed the "name" trim ring.
The original poster did say "slight" dent and i have had success getting name rings off even when the filter threads have been a little mangled, the name ring on the 55 is very tough by the way.

Nevertheless, great point Just1MoreDave.
06-16-2009, 05:10 AM   #7
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Original Poster
Damn.. I was unaware that the name ring, (or the surrounding ring), screwed off at all. I found this out after i managed to get the filter on so tight that it came off with it when i tried to unscrew the filter again. I put some heavy fabric on the dint and gave it some very slight leverage with wide pliers. The filter fits ok now and have cleaned it because my Dad gave me a hand and got his greasy mits all over the glass. He put a slight scratch on the 'Super' part of the name ring but will forgive him. I can however see a strand of fluff that got past my little blower.. damnit this thing is, (VERY), hard to remove now.

My method was a little brutal and the filter is now very hard to remove. I was a little too keen to get this sorted, but i do thank you all for your, (more logical), ideas.

Cheers
06-16-2009, 06:59 AM   #8
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Do what Just1MoreDave said... Screw in a filter, remove the filter's element & leave the empty filter ring on the lens. Voila! new, undamaged threads.

(the filter's element is held in place by a threaded ring. This ring can be removed using the two notches in it; I sometimes use scissors as a spanner wrench for this purpose.)



Iowa Dave


Last edited by newarts; 06-16-2009 at 07:28 AM.
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