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NikonD
Joined: 29 Jul 2008 Posts: 1922 Location: Slovenija
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Posted: Fri Aug 13, 2010 5:40 am Post subject: How to fix a dent |
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NikonD wrote:
how do you guys deal with such damages on lenses filter thread?
I want to repair one lens but don't want to use pliers |
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mo
Joined: 27 Aug 2009 Posts: 8982 Location: Australia
Expire: 2016-07-30
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Posted: Fri Aug 13, 2010 5:51 am Post subject: |
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mo wrote:
Hi
I just moved your question to here as it is the right forum for it.Have you used the search function...I know this subject has been asked before.There is a special filter tool sold by member Alex from Hong kong but I am unsure if you can contact him at the moment.
Some one else may have a better idea...
I found this link http://forum.mflenses.com/lens-filter-thread-repair-tool-any-interest-t27125,highlight,filter+dent+removal.html _________________ Moira, Moderator
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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NikonD
Joined: 29 Jul 2008 Posts: 1922 Location: Slovenija
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Posted: Fri Aug 13, 2010 6:14 am Post subject: |
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NikonD wrote:
great, thanks, looks like a great tool |
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Scheimpflug
Joined: 06 Feb 2010 Posts: 1888 Location: New Zealand / USA
Expire: 2011-11-18
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Posted: Fri Aug 13, 2010 6:53 am Post subject: |
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Scheimpflug wrote:
Great if you can get one.
Unfortunate but necessary reading:
http://forum.mflenses.com/alex-t29679.html
http://forum.mflenses.com/alex-hk300-t30505.html
If you can't acquire one of the "real" tools, here is a DIY option:
http://www.kyphoto.com/classics/filterringtool.html _________________ Sigma DP1, Nikon D40 (hers ), Polaroid x530, Pentax P30t, Pentax P50, (P30t/P50 K-A to Nikon F body mount conversion)
Nikon: 18-55/3.5-5.6 "G ED II DX" (F) Soligor: 28/2.8 (FL->F converted), 135/3.5 (F), 3x TC (F, modified) Kalimar: 28-85/3.5 (F)
Vivitar: 70-210/2.8-4.0 Version 3 (F), Tele 500/6.3 Preset (F), 19/3.8 (F) Minolta: 300/5.6 (SR/MC/MD pending F conversion)
Tamron: 28/2.8 (Adaptall) Panagor: 28/2.5 (FD) Aetna: 300/5.6 (F) Osawa: MC 28/2.8 (F)
Vintage Lenses: Dallmeyer: 1940s A.M. 14in 356mm f4 (ULF->M42) 1930s Adon Telephoto Taylor, Taylor & Hobson: 1880s Rapid Rectilinear 8 1/2 x 6 1/2 11.31in f/8 (LF->?)
Parts Lenses: Nikon 35-135/3.5-4.5 (F), Sigma 70-210/4.5 (F), Nikon 50/1.8 Series E (F) |
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NikonD
Joined: 29 Jul 2008 Posts: 1922 Location: Slovenija
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Posted: Fri Aug 13, 2010 7:15 am Post subject: |
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NikonD wrote:
hmmm.... DIY option is aggressive |
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Boomer Depp
Joined: 08 Oct 2009 Posts: 552 Location: Kingston,Washighton
Expire: 2011-12-04
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Posted: Fri Aug 13, 2010 7:34 am Post subject: |
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Boomer Depp wrote:
I used the DIY option...and it worked surprisingly well...in fact a was amazed how easy it was....
I had three Vivitar 400/5.6 TX lenses our children used....one had a severely bent filter ring from a fall when climbing,bent over about 30 degrees,for a little more then five centimeters of the diameter of the ring.The lens was still used by the kids like this for years.But recently another photographer on POTN was looking for a lens cheap,told him if I could straighten the ring I would send it to him.
I basically used the method in the link ,without cutting the radius in a piece of wood(rather then wood I used several layers of cardboard to cushion the other side of the lens).Instead of a dowel I used a tapered wood plug that I slightly rounded on the end with a file(If you don't have a file,some rough concrete on a sidewalk can be used to round the wood by scraping it on the concrete).Use a piece of softwood like pine or fir rather then a hardwood so the threads are not damaged.
It took about five minutes of tapping back and forth across the bend to return the ring to it's original shape,never tapping in the same place twice in a row.Every few taps or so I would inspect the lens to make sure it was returning to a perfect radius.When done you couldn't tell the filter ring had ever been bent and tested it by screwing a filter,which went on like it was never bent with no damage to the threads.
The key is to take your time and tap lightly on the dowel or whatever wood you use.The hammer I used was a 32 oz. ball bean hammer,so I would have sufficient weight when tapping lightly.
In the link a helper is used to hold the lens.I did it by myself holding the lens down with my forearms while tapping,because my wife wasn't home and my children are adults now and on there own.I would recommend having your son help,he is big and strong enough to do it...and he'll get a big reward by helping his dad.
http://www.kyphoto.com/classics/filterringtool.html _________________ Trust that little voice in your head that says "Wouldn't it be interesting if...." And then do it. |
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NikonD
Joined: 29 Jul 2008 Posts: 1922 Location: Slovenija
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Posted: Fri Aug 13, 2010 8:06 am Post subject: |
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NikonD wrote:
thanks for the help.... first I have to receive the lens |
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Boomer Depp
Joined: 08 Oct 2009 Posts: 552 Location: Kingston,Washighton
Expire: 2011-12-04
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Posted: Fri Aug 13, 2010 8:14 am Post subject: |
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Boomer Depp wrote:
Another Nikkor perhaps?
BTW...the soft wood kind of smooshs up and deforms,so needs to be refiled or scraped on a rough surface a couple of times through the procedure to return to a workable rounded shape....in the link he also recommends hardwood,I think this would damage the threads and be mistake. _________________ Trust that little voice in your head that says "Wouldn't it be interesting if...." And then do it. |
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NikonD
Joined: 29 Jul 2008 Posts: 1922 Location: Slovenija
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Boomer Depp
Joined: 08 Oct 2009 Posts: 552 Location: Kingston,Washighton
Expire: 2011-12-04
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Posted: Fri Aug 13, 2010 8:39 am Post subject: |
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Boomer Depp wrote:
Excellent! Your Nikkor collection continues to grow! The bend looks quite minor compared to the large dent I had to fix....perhaps two and a half centimeters at the most. _________________ Trust that little voice in your head that says "Wouldn't it be interesting if...." And then do it.
Last edited by Boomer Depp on Fri Aug 13, 2010 8:48 am; edited 1 time in total |
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NikonD
Joined: 29 Jul 2008 Posts: 1922 Location: Slovenija
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Posted: Fri Aug 13, 2010 8:47 am Post subject: |
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NikonD wrote:
well I hope I'll fix it without destroying the lens |
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Boomer Depp
Joined: 08 Oct 2009 Posts: 552 Location: Kingston,Washighton
Expire: 2011-12-04
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Posted: Fri Aug 13, 2010 8:50 am Post subject: |
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Boomer Depp wrote:
Take your time and you'll be fine... _________________ Trust that little voice in your head that says "Wouldn't it be interesting if...." And then do it. |
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Banjo
Joined: 25 Jun 2009 Posts: 75 Location: Oz (Near Adelaide)
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Posted: Mon Aug 16, 2010 12:26 am Post subject: |
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Banjo wrote:
Boomer Depp wrote: |
I used the DIY option...and it worked surprisingly well...in fact a was amazed how easy it was....
I basically used the method in the link ,without cutting the radius in a piece of wood(rather then wood I used several layers of cardboard to cushion the other side of the lens).Instead of a dowel I used a tapered wood plug that I slightly rounded on the end with a file...
It took about five minutes of tapping back and forth across the bend to return the ring to it's original shape,never tapping in the same place twice in a row.Every few taps or so I would inspect the lens to make sure it was returning to a perfect radius.When done you couldn't tell the filter ring had ever been bent and tested it by screwing a filter,which went on like it was never bent with no damage to the threads.
The key is to take your time and tap lightly on the dowel or whatever wood you use.The hammer I used was a 32 oz. ball bean hammer,so I would have sufficient weight when tapping lightly.
In the link a helper is used to hold the lens.I did it by myself holding the lens down with my forearms...
http://www.kyphoto.com/classics/filterringtool.html |
I'm with Boomer Depp.
The only differences were: I rested my lens on a piece of solid 1/4" thick rubber matting (placed on a solid bench); I held it in place by chocking it with some folded rags; my hammer was only about two ounces weight; my "drift" or punch was made from a dried Eucalyptus twig found in the garden.
The result was perfect.
In my case, the lens tube was probably of relatively soft, anodized (black), Auminium alloy.
Tap softly! |
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