How to fix filter thread on camera lens?

4 years 11 months ago #643407 by Cliff
I came close to buying a second hand 70-200mm lens today, but noticed the filter threads were damaged.  

Would you happen to know if these can these be fixed for reasonable amount? 


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4 years 11 months ago #643434 by Nikon Shooter
Repair is not the way I'd choose, but a replacement
of front ring is performed easily and cheaply.

Light is free… capturing it is not!
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4 years 11 months ago #643551 by Jim Photo

Nikon Shooter wrote: Repair is not the way I'd choose, but a replacement
of front ring is performed easily and cheaply.


Isn't that part of the entire front barrel of the lens? 


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4 years 11 months ago #643555 by Ozzie_Traveller
G'day Cliff

It will all come down to 'how badly damaged the threads are'

Inventing for a moment- if the lens was dropped at some time and the original UV filter jammed in place needed to be attacked with pliers etc, it may have also irreversibly damaged the threads in the lens barrel.

If the circular threaded lens barrel is 'bent' / 'flattened' because it has been knocked, this is fixable via some very soft / fine tapping with a nylon hammer followed by careful running in-out with a filter that has been lubricated to make it easy

However, -if- a filter was inserted and just cross-threaded it is quite a different story

Best I can suggest is another close look into the threads and work out whether it is recoverable or not. I would suggest you chase up a "rat-tail file" from your hardware store .... get one about 3/16" - 4mm dia. Being a rat-tail file it will be hardened steel and shaped to a needle point - meaning that you then spend an hour or so very, very, very carefully sliding the sharp point from the inside of the thread out to the front surface - ie: backwards- thus recutting the thread over the top of the cross-threaded / damaged section

Hope this helps
Phil from the great land Downunder
www.flickr.com/photos/ozzie_traveller/sets/

Phil from the great land Downunder
www.flickr.com/photos/ozzie_traveller/sets/

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4 years 11 months ago #643584 by Carlos
I would pass on this.  How did the damage occur? 

(2) Canon 7D, Canon 18-55mm f/3.5-5.6 IS, 17-55 f/2.8 IS USM, 50mm f/1.4 USM, 85mm f/1.8 USM, Sigma 70-200mm f/2.8 HSM, Sigma 10-20mm f/4-5.6
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4 years 11 months ago #643586 by Nikon Shooter
The making of a lens is built around or in a tube
that is cut to length. Lenses on rings and rings
in/on tube.

Light is free… capturing it is not!
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4 years 11 months ago #643659 by Sassy Girl
Do many good deals on used right now, I would pass on it.  Unless you can get for ridiculous price.  


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4 years 11 months ago #643945 by CatherineW
Back in 2017, I had a lens roll off a table and it bent the front threads.  The real problem was with the autofocus in the lens, that never worked right again.  

***Remember 9/11***
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4 years 11 months ago #644112 by Finn
Depends on the price, how much was it for sale for?


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