A visual inspection, from the outside, indicates no oil at the diagraphm (thats the aperture blades isn't it?). When using the DOF preview button at my Ds I hear a the same sound as usual, the only thing happening is the regular sound, the image in the viewer doesnt change. The oil theory doesnt make sense to me, but I'm no expert, not at all ;-)
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: Joaquim Carvalho [mailto:[EMAIL PROTECTED] Sent: 30. juni 2005 21:23 To: pentax-discuss@pdml.net Subject: Re: Follow upon: Vivitar Series 1 P/K 70-210/2.8-4.0 Version 3 Look at the diaphragm blades, is there any oil on them? There shouldn't be. The diaphragm has to close very quickly when the camera takes a picture. Set the aperture ring to F22. Push and release the diaphragm lever, how long did it take to close? If there's oil on the blades a good camera repair shop will clean them. I payed 17 Euros to have an F SMC 50mm F1.7 cleaned, it's now as good as new. On Thu, 2005-06-30 at 16:44, Tim Øsleby wrote: > 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. > > > > > > > > > >
