I understand now. It could still be the tension spring, but the jamming at full aperture worries me. I have a bad feeling a repair has been attempted on this lens and either it was incorrectly assembled, or damaged during the repair. **If it were me** I would carefully remove the mount and see if I could fix it. But fixing things is what I've done all my life. If you try to fix it, be careful not to make it worse, and do it soon so you can let the seller know as soon as possible that you need a refund. As broken as it is you can't lose by trying to repair it, just be fair to the seller and be sure to return it (if you must) in as good a condition as you got it. One last note though, the non-locking "A" position usually means that a part is broken, or missing. (In my experience)
I do have one of theses lenses and will be happy to help, if I can. Don > -----Original Message----- > From: Tim Øsleby [mailto:[EMAIL PROTECTED] > Sent: Thursday, June 30, 2005 7:14 PM > To: pentax-discuss@pdml.net > Subject: RE: Follow upon: Vivitar Series 1 P/K 70-210/2.8-4.0 Version 3 > > > Don. > 1. No. And tapping does not help; the only thing helping is to move the > aperture control lever manually. > > 2. When moving the aperture control lever, the aperture opens and closes. > Almost as it is supposed to do. If I move to near full opening, it slides > back again when I let it go, but a bit slower than normal. On full opening > it doesnt go back at all, they are jammed. > I also have to use a bit more force at the full open end. > > Understand, or still confused? > > BTW. Like your new signature ;-) > > > Tim > Not drunk, just plain Norwegian. > > Never underestimate the power of stupidity in large crowds > (Very freely after Arthur C. Clarke, or some other clever guy) > > > -----Original Message----- > From: Don Sanderson [mailto:[EMAIL PROTECTED] > Sent: 1. juli 2005 01:32 > To: pentax-discuss@pdml.net > Subject: RE: Follow upon: Vivitar Series 1 P/K 70-210/2.8-4.0 Version 3 > > Tim, I'm not clear on what the lens is doing, let me ask a couple of > questions: > > 1. With the lens OFF the camera set the aperture ring to f/16, > does the lens > stop down to a small aperture? Does tapping it with your fingers help? > > 2. Still set at f/16 rotate the aperture control lever on the back of the > lens > slowly through its travel, what happens? > > I tend to suspect the aperture return spring AND that someone has > attempted > repair, hence the broken "A" position lock. > > Don (Not drunk, just of Norwegian heritage.) ;-) > > > -----Original Message----- > > From: Tim Øsleby [mailto:[EMAIL PROTECTED] > > Sent: Thursday, June 30, 2005 11:45 AM > > To: pentax-discuss@pdml.net > > Subject: Follow upon: Vivitar Series 1 P/K 70-210/2.8-4.0 Version 3 > > > > > > I have got the lens today. I was much exited (relax I'm not > going to talk > > dirty this time), even though it is a beauty. It came without > lens cap and > > rear cap, but never the less. Not a scratch, zoom and focus is > simply soft > > as butter. What surprised me a bit was that it wouldn't lock in > > A-modus, is > > this normal for this lens? > > > > I flew out to do some test shots. A baby seagull was swimming > > around in the > > tide area, and I fired away. But it turned out to be a real > downer. Every > > picture was strongly overexposed. After some research I have > came to this > > conclusion: It is not working properly at any aperture except wide open. > > I'm able to manipulate the aperture by pushing the level in the > mount. But > > what seems to be the case is that it gets stuck at wide open. > > > > It looks like it barely has been in touch with a camera house. It > > isnt full > > of dirt, and I dont believe it has been tampered with in any > > way. Visually > > it is in perfect condition. > > > > I have a theory. I believe it hat been stored for many year > wide open, and > > this may have coursed the aperture spring(is this the English word?). So > > what do I do, except returning it? It seems to perform well, > wide open. Is > > it a major operation to open it and have a look? And what do I > > look for? And > > does anybody have any better theories? > > > > Never underestimate the power of intelligence in large crowds ;-) > > > > Tim > > Not drunk, just plain Norwegian. (And a bit let down) > > > > Never underestimate the power of stupidity in large crowds > > (Very freely after Arthur C. Clarke, or some other clever guy) > > > > > > -----Original Message----- > > From: Tim Øsleby [mailto:[EMAIL PROTECTED] > > Sent: 16. juni 2005 14:26 > > To: pentax-discuss@pdml.net > > Subject: Vivitar Series 1 P/K 70-210/2.8-4.0 Version 3 > > > > There was a thread on a similar lens. Got the Version 3 (manufactured by > > Komine) on hand for about 75 US$. Is this a good lens? > > > > Tim > > Another Norwegian. > > > > > > > > > > > > > > > > > > > > > > >
