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estik
Joined: 15 Mar 2009
Posts: 4
Location: Portugal
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 Posted: Mon Mar 16, 2009 12:27 am Post subject: Hoya 28mm f2.8 aperture blades cleaning |
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estik wrote:
Hi all, I am new around here.
I have been watching for a few weeks this forum this is my first post 
I got hold of an Hoya 28mm f2.8 (Nikon F mount) with apperture blades stuck, they have oil.
Does any one have one of these? Any luck opening it?
I am going to try opening it, but I have not seen any plans of it. 
Cheers
_________________
Nikon D40 - Nikkor 18-55mm f/3.5-5.6 - Nikkor 50mm f/1.8 - Micro-Nikkor 55mm f/2.8 - Nikkor 135mm f/2.8
Kaligar 135mm f/2.8 - Hoya 28mm f/2.8 - Helios 44-2 58mm f/2 - Pentacon 135mm f/2.8
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Mon Mar 16, 2009 12:45 am Post subject: |
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Attila wrote:
Welcome!
Bad news is many late Japanese lens has nasty built they used for example glue to fix screw and this glued screws are un removable.
_________________
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Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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estudleon
Joined: 15 May 2008
Posts: 3754
Location: Argentina
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| Posted: Mon Mar 16, 2009 1:44 pm Post subject: |
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estudleon wrote:
It seems to be a lens with a very good IQ. Perhaps it may be of your interest:
http://www.pbase.com/steephill/28mms
Good luck. Rino.
_________________
Konica 2,8/100
CZJ: 4/20, 2,4/35, 1,8/50 aus jena, 3,5/135MC, Pentacon 1,8/50
Pentax S-M-C-1,4/50
Helios 44-3
Mamiya 2,8/135
Misc. : jupiter 9
Stuff used:
A) SRL
Alpa 10 D - kern macro Switar 1,9/50 -black, Kilffit apochromat 2/100.
Asahi pentax spotmatic super takumar 1,4/50
Contaflex super B tessar 2,8/50 Pro-tessar 115
Leica R3 electronic summicron 2/50 elmarit 2,8/35
Konica Autoreflex 3 (2 black and chrome one), TC, T4. 2,8/24, 3,5/28 not MC and MC, 1,8/40, 1,4/50, 1,7/50 MC and not MC, 1,8/85, 3,2/135, 3,5/135, 4/200
Minolta XG9 2,8/35, 2/45, 3,5/135
Nikkormat FTn 1,4/50, 2,8/135
Fujica ST 801, 605, 705n. 3,5/19, 1,4/50, 1,8/55, 4/85, 3,5/135.
Praktica MTL 5 and a lot of M42 lenses.
Voigtlander. Bessamatic m, bessamatix de luxe, bessamatic cs, ultramatic and ultramatic cs.
Skoparex 3,5/35, skopagon 2/40, skopar 2,8/50, skopar X 2,8/50, super lanthar (out of catalogue) 2,8/50, dinarex 3,4/90, dinarex 4,8/100, super dinarex 4/135, super dinarex 4/200, zoomar 2,8/36-83, portrait lens 0, 1 and 2. Curtagon 4/28 and 2,8/35
Canon AV1, 1,8/50
Rolleiflex SL35 and SL35 E. 2,8/35 angulon, 2,8/35 distagon, 1,4/55 rolleinar, 1,8/50 planar, 4/135 tessar, 2,8/135 rolleinar, x2 rollei, M42 to rollei adap.
Etc.
RF
Yashica Minister III
Voightlander Vito, vitomatic I, Vito C, etc.
Leica M. M2, M3 (d.s.) and M4. Schenider 3,4/21, 2/35 summaron 2,8/35 (with eyes). Summicron 2/35 (8 elements with eyes), 2/35 chrome, 2/35 black, 1,4/35 pre asph and aspheric - old -, 2/40 summicron, 2,8/50 elmar, 2/50 7 elements, 2/50 DR, 2/50 - minolta version, 1,4/50 summilux 1966 version, 1,4/75 summilux, 2/90 large version, 2/90 reduced version of 1987, 2,8/90 elmarit large version, 4/135 elmar. |
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estik
Joined: 15 Mar 2009
Posts: 4
Location: Portugal
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| Posted: Mon Mar 16, 2009 8:24 pm Post subject: |
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estik wrote:
 Glued screws?
That's a new one to me
I still haven't tried opening it, but seems like that it's going to put up a fight.
@estudleon
I've seen that chart, it helped me while I was deciding to buy it.
I tried it one or two times, wide open only, the blades are stuck, and the quality seems fine.
I was not aware of the defect, got a refund though.
I'll let you know how it turns out, got to get a decent screwdriver set.
Thanks
_________________
Nikon D40 - Nikkor 18-55mm f/3.5-5.6 - Nikkor 50mm f/1.8 - Micro-Nikkor 55mm f/2.8 - Nikkor 135mm f/2.8
Kaligar 135mm f/2.8 - Hoya 28mm f/2.8 - Helios 44-2 58mm f/2 - Pentacon 135mm f/2.8
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Mon Mar 16, 2009 9:21 pm Post subject: |
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Attila wrote:
| estik wrote: |
Glued screws?
That's a new one to me
I still haven't tried opening it, but seems like that it's going to put up a fight.
@estudleon
I've seen that chart, it helped me while I was deciding to buy it.
I tried it one or two times, wide open only, the blades are stuck, and the quality seems fine.
I was not aware of the defect, got a refund though.
I'll let you know how it turns out, got to get a decent screwdriver set.
Thanks |
Yes, I found in Kiron prime.
_________________
-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Aykman
Joined: 29 Mar 2009
Posts: 57
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| Posted: Tue Jul 14, 2009 9:06 pm Post subject: |
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Aykman wrote:
this message is outdated and deleted!
Last edited by Aykman on Mon Oct 11, 2010 6:38 pm; edited 1 time in total |
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visualopsins
Joined: 05 Mar 2009
Posts: 10994
Location: California
Expire: 2025-04-11
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| Posted: Tue Jul 14, 2009 9:15 pm Post subject: |
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visualopsins wrote:
| Attila wrote: |
| estik wrote: |
Glued screws?
That's a new one to me
I still haven't tried opening it, but seems like that it's going to put up a fight.
@estudleon
I've seen that chart, it helped me while I was deciding to buy it.
I tried it one or two times, wide open only, the blades are stuck, and the quality seems fine.
I was not aware of the defect, got a refund though.
I'll let you know how it turns out, got to get a decent screwdriver set.
Thanks |
Yes, I found in Kiron prime. |
surely you tried acetone Attila?
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX-A ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (151B), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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