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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Thu Apr 17, 2014 4:38 pm Post subject: Vivitar series 1 28/1.9 with fungus |
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Rick1779 wrote:
Any got some advice on disassembling the Vivitar S1 28/1.9? Got some nasty fungy on central elements.
I haven't found much on the topic nor the lens scheme _________________ TELLTALE
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Lloydy
Joined: 02 Sep 2009 Posts: 7775 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Thu Apr 17, 2014 9:08 pm Post subject: |
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Lloydy wrote:
I bought a ropey one a few weeks ago, fungus on the front element, loose focus ring and a stuck aperture. Luckily the fungus was only on the very front element and that was easy to fix, the front element is removed by removing the name ring and then removing the lens securing ring with a lens spanner.
However, the rest of the lens is a nightmare, there is a set of elements held in place by three tiny springs in tension along the front - back axis of the lens. If one of these springs comes off its location pin deep inside the lens then I dread to think how difficult it would be to get it back on. I was working blind, I searched hard for any information on this lens and found nothing, and when I saw those springs I went no further inside the lens from the front. I tightened the loose focus barrel by tightening three tiny grub screws under the rubber grip.
The stuck aperture I got to from the back by removing the Minolta MD mount, someone had been in this lens before and when they replaced the mount they forced it back on and bent a lever, which again I managed to fix. I also cleaned the rear element as that was easy to remove, and I think can be removed with the mount in place - with a lens spanner. From memory, I don't think the inner optical block is easily removed from this lens, I'm pretty sure those three springs are involved.
I bought my lens very cheap knowing the faults, and willing to try and fix it. In the end I spent nearly 7 hours working on this complicated lens and saved it, but it was touch and go. _________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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ZoneV
Joined: 09 Nov 2009 Posts: 1633 Location: Germany
Expire: 2011-12-02
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Posted: Thu Apr 17, 2014 9:18 pm Post subject: |
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ZoneV wrote:
Yes, the floating element design is strange and makes repair not easy.
I saw in one of my optic books a lens scheme, but lenses only, not about the mechanics. _________________ Camera modification, repair and DIY - some links to look through: http://www.4photos.de/camera-diy/index-en.html
I AM A LENS NERD!
Epis, Elmaron, Emerald, Ernostar, Helioplan and Heidosmat.
Epiotar, Kameraobjektiv, Anastigmat, Epis, Meganast, Magnagon, Quinar, Culmigon, Novotrinast, Novflexar, Colorplan, Sekor, Kinon, Talon, Telemegor, Xenon, Xenar, Ultra, Ultra Star. Tessar, Janar, Visionar, Kiptar, Kipronar and Rotelar.
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Lloydy
Joined: 02 Sep 2009 Posts: 7775 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Thu Apr 17, 2014 9:47 pm Post subject: |
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Lloydy wrote:
I've seen, and probably saved, the optic scheme. But can I find the damn thing ?
A good revue of this great lens here - http://www.theatreofnoise.com/2011/07/vivitar-series-1-28mm-review-part-1.html and http://www.theatreofnoise.com/2011/07/vivitar-series-1-28mm-review-part-2.html
and I found this -
http://www.google.com/patents/US4099849
after reading this old topic here on MF.
http://forum.mflenses.com/first-lens-to-challenge-2-4-35mm-flektogon-t25466,start,15.html _________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Fri Apr 18, 2014 1:54 pm Post subject: |
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Rick1779 wrote:
mmm actually I don't know if try it out or send it to a professional repairman
How much can cost a professional cleaning? _________________ TELLTALE
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Lloydy
Joined: 02 Sep 2009 Posts: 7775 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Fri Apr 18, 2014 2:08 pm Post subject: |
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Lloydy wrote:
Mine only cost me £40, I was prepared to risk it. They fetch good money, so it's probably worth spending money on to get it done right. And it it a great lens, I wouldn't sell mine now I've used it. _________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Fri Apr 18, 2014 2:16 pm Post subject: |
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Rick1779 wrote:
Even with fungus I can clearly see the quality in this lens, I just need to find a good professional then _________________ TELLTALE
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Lloydy
Joined: 02 Sep 2009 Posts: 7775 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Fri Apr 18, 2014 5:28 pm Post subject: |
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Lloydy wrote:
Oh, it's worth saving...these are straight from my NEX5 with no processing at all, the blossom picture was straight into the sun - well, it was directly behind the tree. Both pictures at 1.9. They might not be as sharp as the lens can do, it was windy. Close focus on the NEX - the front of the lens is about 6 inches away from the subject.
_________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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TijmenDal
Joined: 22 Sep 2011 Posts: 206
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Posted: Sat Apr 19, 2014 9:12 am Post subject: |
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TijmenDal wrote:
I've had a copy of the lens. In my experience, the close-focusing abilities of the lens made it pretty good for macro'ish work because of the floating elements, but for subjects further away it didn't work as well. I ended up selling it because I found it too big and didn't really need the speed. _________________ //Tijmen
http://cargocollective.com/tijmendal |
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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Wed Apr 30, 2014 1:06 pm Post subject: |
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Rick1779 wrote:
Thanks to all for the informations and to Lloydy for the useful lens scheme.
I've done it, at least I'm on my way to do it. The disassemble process wasn't that hard, I thinks I've unscrewed a bit more than necessary in the mount part but that's not an issue, just a thing or two that keep me a bit worried about for the riassemble process, but will later see how it goes
The floating element design is not a problem, just some small springs to remove, thought was harder.
Here's the scheme with the fungi infected surfaces
The real deal actually is the small blocks of lenses 4, 5 and 6 which i still cannot managed to open and which got some nasty fungi in it
This block is the one that screws in the Diaphragm mechanism and to the focusing helicoid. Got a quite long threading on the left part (referring to the lens scheme) on which is screwed a retaining ring with a flat washer with the common two small holes for the unscrewing. Sorry didn't take a photo and I hope I've pointed out correctly
The problem is that I can't grip on the threaded part to unscrew the retaining flat washer and I can damage the threading itself if I try with a pliers... any suggestions? _________________ TELLTALE
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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Fri May 02, 2014 10:41 am Post subject: |
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Rick1779 wrote:
no idea? _________________ TELLTALE
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Lloydy
Joined: 02 Sep 2009 Posts: 7775 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Fri May 02, 2014 10:35 pm Post subject: |
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Lloydy wrote:
No idea at all sorry, you are in deeper than I went. _________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Fri May 02, 2014 10:48 pm Post subject: |
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Rick1779 wrote:
Will try to post some picture then... _________________ TELLTALE
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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Fri May 02, 2014 10:58 pm Post subject: |
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Rick1779 wrote:
here is the lens group
as you can see someone did already tried to unscrewed it _________________ TELLTALE
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jaecarlos714
Joined: 06 Jun 2013 Posts: 17 Location: Portland, Oregon
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Posted: Sun May 04, 2014 3:55 pm Post subject: |
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jaecarlos714 wrote:
Making a guess, and I think the ring on the last photo (with the two holes) unscrews from rest. Get a lens spanner or angled C-clip plyers to use the holes, then plyers on the thin ridge that is between the two hole ring and exposed threads. Before attempting, use some penetrating oil and let soak in for an hour. Apply small amount using a toothpick.
Or, just leave it alone. There is risk of damage if threads are too tight.
John |
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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Mon May 05, 2014 9:41 pm Post subject: |
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Rick1779 wrote:
I've put the lens blcok in alcohool to kill the small fungi in it, once evaporated I've reassembled the whole lens, not so easy and straight I'd say
But everything went pretty good, maybe not at first try
anyway removing the name plate the lens can be "Hacked" to go even more closer than the "normal" 30cm but without it it's tricky since the whole lens block can fall from the helicoids if you turn too much
here's an example
af 1.9 it's pretty glowing, maybe a bit too much...
f2.8 goes better
f4
Now I should try with daylight and check if I've not miscplaced the infinity block _________________ TELLTALE
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Lloydy
Joined: 02 Sep 2009 Posts: 7775 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Tue May 06, 2014 3:13 am Post subject: |
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Lloydy wrote:
Quote: |
anyway removing the name plate the lens can be "Hacked" to go even more closer than the "normal" 30cm but without it it's tricky since the whole lens block can fall from the helicoids if you turn too much |
I did that......what a ballache it was to get it back in the right thread! I did eventually get it right, but it was tricky. _________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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Rick1779
Joined: 17 May 2013 Posts: 1207 Location: Italy
Expire: 2014-06-06
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Posted: Tue May 06, 2014 7:43 am Post subject: |
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Rick1779 wrote:
Yes don't tell me
First time I had to disassemble the whole lens again, later on I managed to get the lens block back in the helicoids
I prefer the simple and plain russian and german lens to disassemble _________________ TELLTALE
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Pontus
Joined: 18 Dec 2011 Posts: 1471 Location: Jakobstad, Finland
Expire: 2016-08-25
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Posted: Fri Nov 13, 2015 9:33 pm Post subject: |
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Pontus wrote:
My lens looks and works very well except that my focusing barrel is loose as well. How can I access those three screws? I have to take the rubber ring off? Can I do that and get it back on without damaging it? Can it be brittle by now?
EDIT: Now I see. There are three tiny screws under between the focusing barrel and the aperture ring. Not under under the rubber, if you understand what I mean. I will try to tightening those screws. _________________ Follow this link for my FOR SALE list (partially updated 19.11.2015) |
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