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Phalbert
Joined: 17 May 2009
Posts: 359
Location: Namibia
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 Posted: Wed Jun 14, 2023 11:48 am Post subject: Cleaning heliopan circ pol |
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Phalbert wrote:
Hi. Maybe not the right forum, if not, admin please help. Thanks.
I found this filter in a charity shop too cheap to be left, it looked quite dirty but at first look it all seemed to be on the external surfaces. Well, it is not. It's all inside...
So has anyone a clue if this filter can be opened and how? Thanks a lot.
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My dream lenses: Zuiko 180/2 Prototype Zuiko 85/1,4
Zeiss CY: 55/1,2 85/1,2
Astro Berlin 250/2 Canon EF 50/1,0 85/1,2
Nikkor 105/1,4 28/1,4
My stolen stuff: Zuiko 24/2 #106874; Zuiko 35-80/2,8 #102180; Zuiko 35/2 #119168; Zuiko 90/2 macro #102858; Zuiko x1,4 converter #102019; Tamron 17/3,5 #400567; Tamron 400/4 #80407; Soligor 135/2 #17506600 Sigma 28/1,8 #1001124 |
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calvin83
Joined: 12 Apr 2009
Posts: 7554
Location: Hong Kong
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| Posted: Wed Jun 14, 2023 12:01 pm Post subject: |
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calvin83 wrote:
Degradation of the polarizing film on the polarizer?
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Ultrapix
Joined: 06 Jan 2012
Posts: 551
Location: Italy
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| Posted: Wed Jun 14, 2023 12:46 pm Post subject: |
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Ultrapix wrote:
| calvin83 wrote: |
| Degradation of the polarizing film on the polarizer? |
+1 |
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kiddo
Joined: 29 Jun 2018
Posts: 1121
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| Posted: Wed Jun 14, 2023 1:02 pm Post subject: |
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kiddo wrote:
I did open to clean couple of pol filters , in my case ,they open just like lenses , at least one side it's got to have notches to release the ring with a spanner or rubber tools. I've never seen a degradation in the pol filters yet, most I have are heliopan. |
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Phalbert
Joined: 17 May 2009
Posts: 359
Location: Namibia
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| Posted: Wed Jun 14, 2023 7:22 pm Post subject: |
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Phalbert wrote:
Thanks guys. I don't see any notches. 🤔 And haven't heard of pol film degradation yet. I suppose there would't be any remedy for that, right?
_________________
🙋 My wishlist: Titan or Idaho 135/1,8 Nikon Df Nikkor 105/1,8 35/1,4 85/1,4
My dream lenses: Zuiko 180/2 Prototype Zuiko 85/1,4
Zeiss CY: 55/1,2 85/1,2
Astro Berlin 250/2 Canon EF 50/1,0 85/1,2
Nikkor 105/1,4 28/1,4
My stolen stuff: Zuiko 24/2 #106874; Zuiko 35-80/2,8 #102180; Zuiko 35/2 #119168; Zuiko 90/2 macro #102858; Zuiko x1,4 converter #102019; Tamron 17/3,5 #400567; Tamron 400/4 #80407; Soligor 135/2 #17506600 Sigma 28/1,8 #1001124 |
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RokkorDoctor
Joined: 27 Nov 2021
Posts: 1271
Location: Kent, UK
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| Posted: Thu Jun 15, 2023 9:25 am Post subject: |
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RokkorDoctor wrote:
Many Heliopan filters (and B+W filters for that matter) use retaining rings without notches; you need a rubber retainer ring removal tool to unscrew them. Seems to be more common on modern slim-line filters; older filters often still have a retainer ring with notches for a spanner.
HOYA and many other filters are held in place by a slightly undulating retaining spring clip, which secures the glass as well as presses it up against a machined flange in the filter holder.
As to the PL filter issue, could be cement degradation; the polariser filters I have taken apart all had their front-glass / PL-film / rear-glass triple sandwich cemented together, so no chance of separating the glass from the polariser filter anyway.
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Mark
SONY A7S, A7RII + dust-sealed modded Novoflex/Fotodiox/Rayqual MD-NEX adapters
Minolta SR-1, SRT-101/303, XD7/XD11, XGM, X700
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Ricoh GX100
Minolta majority of all Rokkor SR/AR/MC/MD models made
Sigma 14mm/3.5 for SR mount
Tamron SP 60B 300mm/2.8 (Adaptall)
Samyang T-S 24mm/3.5 (Nikon mount, DIY converted to SR mount)
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Bronica PS 35/40/50/65/80/110/135/150/180/200/250mm |
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BrianSVP
Joined: 09 Jun 2023
Posts: 301
Location: Philadelphia
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| Posted: Thu Jun 15, 2023 7:44 pm Post subject: |
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BrianSVP wrote:
Yes, a rubber tool used on the bezel should allow you to disassemble.
It's pretty common for filters that have been sitting in plastic or foam padded cases for some time to get an oily haze due to outgassing of the polymers in the case.
Typically it will wipe right off with lens fluid. If this particular filter is airgapped rather than cemented on either side, that could be the cause, and you might be able to clean the surfaces. |
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Phalbert
Joined: 17 May 2009
Posts: 359
Location: Namibia
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| Posted: Fri Jun 16, 2023 4:35 am Post subject: |
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Phalbert wrote:
Thanks guys. Too bad. I tossed it... 😕 Kept the box... 😊
_________________
🙋 My wishlist: Titan or Idaho 135/1,8 Nikon Df Nikkor 105/1,8 35/1,4 85/1,4
My dream lenses: Zuiko 180/2 Prototype Zuiko 85/1,4
Zeiss CY: 55/1,2 85/1,2
Astro Berlin 250/2 Canon EF 50/1,0 85/1,2
Nikkor 105/1,4 28/1,4
My stolen stuff: Zuiko 24/2 #106874; Zuiko 35-80/2,8 #102180; Zuiko 35/2 #119168; Zuiko 90/2 macro #102858; Zuiko x1,4 converter #102019; Tamron 17/3,5 #400567; Tamron 400/4 #80407; Soligor 135/2 #17506600 Sigma 28/1,8 #1001124 |
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