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uddhava
Joined: 22 Aug 2012 Posts: 3071 Location: Hungary
Expire: 2021-06-21
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Posted: Tue Jul 16, 2019 8:29 am Post subject: Replacements for front lens element retaining ring. |
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uddhava wrote:
I need to replace the front lens element retaining ring. Any sources or ideas?
Thank you. |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Tue Jul 16, 2019 1:49 pm Post subject: |
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Blazer0ne wrote:
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Last edited by Blazer0ne on Tue Feb 22, 2022 5:24 pm; edited 1 time in total |
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Tue Jul 16, 2019 2:39 pm Post subject: |
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visualopsins wrote:
Maybe specify lens; solving that problem first may lead to more general solutions later.
Or not. Edmund Scientific and other industrial lens makers have parts such as bodies, iris, retaining rings, helicals, for making custom lenses. These are mostly c-mount but m42 parts can be found. |
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uddhava
Joined: 22 Aug 2012 Posts: 3071 Location: Hungary
Expire: 2021-06-21
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Posted: Tue Jul 16, 2019 4:16 pm Post subject: |
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uddhava wrote:
Blazer0ne wrote: |
Do you need this to simply keep out the dust or to hold the front element in place? |
The ring holds the lens in place. It is from an old Nikkor H 3.5 28mm lens. |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Tue Jul 16, 2019 5:02 pm Post subject: |
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Blazer0ne wrote:
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Last edited by Blazer0ne on Tue Feb 22, 2022 5:24 pm; edited 1 time in total |
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uddhava
Joined: 22 Aug 2012 Posts: 3071 Location: Hungary
Expire: 2021-06-21
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Posted: Tue Jul 16, 2019 7:22 pm Post subject: |
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uddhava wrote:
Blazer0ne wrote: |
uddhava wrote: |
Blazer0ne wrote: |
Do you need this to simply keep out the dust or to hold the front element in place? |
The ring holds the lens in place. It is from an old Nikkor H 3.5 28mm lens. |
Could you use a filter and remove the glass. If you find one with deep threads it might work or you could pad the bottom with shims.
A cheap plastic threaded lens shade might also be salvaged to work.
Sometimes the ring also serves to center the lens. If that is not the case, maybe a new ring can be molded in place with Polycaprolactone. |
Thank you, I was thinking of the lens shade option. I will see what bits and pieces they have at the used camera stores in Budapest.
Otherwise I can order a lens shade on ebay. How would you cut off the shade? |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Tue Jul 16, 2019 10:25 pm Post subject: |
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Blazer0ne wrote:
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Last edited by Blazer0ne on Tue Feb 22, 2022 5:24 pm; edited 1 time in total |
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SkedAddled
Joined: 19 Oct 2008 Posts: 1424 Location: Michigan, USA
Expire: 2021-08-12
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Posted: Tue Jul 16, 2019 11:25 pm Post subject: |
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SkedAddled wrote:
Blazer0ne wrote: |
You can use a spanner wrench to unthread the inner ring of a lens filter with the same diameter as the lens. This piece might actually fit and thread further into the lens holding the element in place. |
This was my thought exactly.
If the thread is of the same diameter, it may very well fit as a replacement for a retainer.
Seeing as how so many filters carry their lens-fit threads to the rest of the assembly,
it makes some sense to try a filter-glass retaining ring from a filter which fits the lens.
It's typical for such filters to have threads which can accept an accessory or even other
filters attached, so it's reasonable to expect such a ring can also be used as a way
to replace a lost or damaged lens retainer. _________________ Craig
Of course I'm all right! Why? What have you heard!?
Canon Digital EOS 5D Mk IV, EOS 50D, Powershot S3 iS
Vivitar 28 f/2.8 OM - Zuiko 50 f/1.8 OM - Tamron SP 28-80 f/3.5 AD2[Favorite!] - Hanimar 135 f/3.5 M42 - Soligor 135 f/2.8 T4 - Tamron SP 60-300 f/3.8 AD2 - Soligor 75-260 f/4.5 M42 - Soligor 400 f/6.3 T4 - Soligor 500 f/8 T2 Cat + Matched 2X TC - Addiction Growing!
This is us -- We drive these -- We're named these |
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uddhava
Joined: 22 Aug 2012 Posts: 3071 Location: Hungary
Expire: 2021-06-21
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Posted: Wed Jul 17, 2019 8:42 am Post subject: |
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uddhava wrote:
SkedAddled wrote: |
Blazer0ne wrote: |
You can use a spanner wrench to unthread the inner ring of a lens filter with the same diameter as the lens. This piece might actually fit and thread further into the lens holding the element in place. |
This was my thought exactly.
If the thread is of the same diameter, it may very well fit as a replacement for a retainer.
Seeing as how so many filters carry their lens-fit threads to the rest of the assembly,
it makes some sense to try a filter-glass retaining ring from a filter which fits the lens.
It's typical for such filters to have threads which can accept an accessory or even other
filters attached, so it's reasonable to expect such a ring can also be used as a way
to replace a lost or damaged lens retainer. |
Thanks, I didn't know this. I see not all filters have the removable ring though.
All of my 52mm filters which fit the lens don't. I will look for these when I visit the camera store.
This seems to be the best and easiest solution. |
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SkedAddled
Joined: 19 Oct 2008 Posts: 1424 Location: Michigan, USA
Expire: 2021-08-12
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Posted: Sat Jul 20, 2019 10:22 pm Post subject: |
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SkedAddled wrote:
While I can't be sure right now, it may be that only one or two of my CPL filters
do not use a threaded retaining ring to hold the glass in place, and the fewer
of my clear/UV filters probably use threaded retainers as well.
Look closely at the glass edge, where it's held in place, on the outside.
Around the circumference of that, you'll likely find tiny notches
at 180-degrees from each other. Those are the recesses meant for tools
such as a lens spanner/wrench, used to tighten or remove it.
Looking at a Green-L, no-name brand, CPL filter of mine
(which performs surprisingly well), I can see those notches clearly.
The retaining ring is made of plastic, but it is indeed threaded, and it
is the same as the overall 67mm thread the filter is made to fit.
I've just checked it.
The filter is made to fit a 67mm lens, and the filter's retainer also
threads into the lens itself.
You may wish to secure such a cheap filter, but with metal construction,
for your needs. Alternatively, browse local vintage shops or local
camera fairs for a low-priced option. _________________ Craig
Of course I'm all right! Why? What have you heard!?
Canon Digital EOS 5D Mk IV, EOS 50D, Powershot S3 iS
Vivitar 28 f/2.8 OM - Zuiko 50 f/1.8 OM - Tamron SP 28-80 f/3.5 AD2[Favorite!] - Hanimar 135 f/3.5 M42 - Soligor 135 f/2.8 T4 - Tamron SP 60-300 f/3.8 AD2 - Soligor 75-260 f/4.5 M42 - Soligor 400 f/6.3 T4 - Soligor 500 f/8 T2 Cat + Matched 2X TC - Addiction Growing!
This is us -- We drive these -- We're named these |
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uddhava
Joined: 22 Aug 2012 Posts: 3071 Location: Hungary
Expire: 2021-06-21
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Posted: Sun Jul 21, 2019 6:53 pm Post subject: |
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uddhava wrote:
Thank you for the more information.
I will post again when I find one. |
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Gardener
Joined: 22 Sep 2013 Posts: 950 Location: USA
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Posted: Wed Jul 24, 2019 2:02 pm Post subject: |
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Gardener wrote:
I typically do things like that by taking apart a bunch of old zooms until I find the matching piece. |
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