Archived posting to the Leica Users Group, 2001/06/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Yes, Ted .....right on..... he's a wanna be Leica -user, wanna be doctor, wanna be lawyer.... wanna be wanna be.... > Beware dealing with this one as he'll eventually drive you crazy! And or > have the LUG in such turmoil everyone will be looking to cut each others > throat. > > Why? Because this is the infamous "Anthony of Paris!" Who last year had > LUGGERS fighting between themselves while he sat back stirring the pot daily > playing all innocent. > > In the beginning of his joining the LUG he appeared simple enough and each > and all of us tried to be polite and answer his questions. But like a > cancer, he gradually ate away at the list with his questions and responses > until the turmoil was ending friendships, fierce arguments and accusations > one unto the other. Meanwhile he was sitting happily in Paris enjoying his > chain pulling and the stupidity of LUGGERS not to see through his charade, And if this isn't Anthony, then maybe good old >> mxsmanic<< may show some > courtesy to the members and say hello with his real name. After all, this is > a name of human list when we correspond. Doesn't that seem like a reasonable > request? > > Folks wait for his answer, question as an answer or whatever. But don't be > surprised. Oh yes and he is a Leica user... or at least that's what he > said. > ted > > > > > > > > > > > > > > > > Ted Grant Photography Limited > www.islandnet.com/~tedgrant > ----- Original Message ----- > From: <SthRosner@aol.com> > To: <leica-users@mejac.palo-alto.ca.us> > Sent: Thursday, June 28, 2001 5:47 AM > Subject: Re: focus stiffness (was [Leica] Black Hole?) > > > > In a message dated 6/28/01 3:01:57 AM Eastern Daylight Time, > > mxsmanic@hotmail.com writes: > > > > << In absolute terms, it is about 1/26 of a stop, so it's not very much, > but > > still > > more than many other lenses.>> > > > > I may have misunderstood. When someone says there's play or slack, I > assume > > that means the aperture ring moves without affecting the diaphragm. > > > > <<But the lens still has to be disassembled, doesn't it?>> > > > > Not necessarily. And even if there needs to be some disassembly, the lens > > cell itself may be able to be left intact, i.e. the problem may be > > correctible without touching any lens elements or their mounts. > > > > <<It's like an acoustic piano: Whenever you tune it, the tuning pins > loosen > > a > > little bit. No matter how careful you are, no matter how good you are, > you > > can't avoid damaging (wearing) the pins and their block down a bit with > every > > tuning. And with a lens, every time you undo a screw or force a ring off > a > > pressure mount or whatever, something wears down a bit, and it will never > be > > quite the same again.>> > > > > I studied piano for most of my youth. There is a great deal of torque > applied > > to piano pins and so it is technically true that each time you tune a > piano, > > there is some wear on the pin. It is however infinitesmal and requires a > > great deal of fiddling (forgive the pun) with the pins to have any effect > at > > all. So you are technically correct in saying that there's some wear, but > in > > the real world, fuhgetaboutit. It's a bit like saying that there's some > wear > > each time you press the shutter release. True, but so what? > > > > In any event, with lenses there is no equivalent torque, tension or > pressure > > on screws or retaining rings. What little resistance or load is required > to > > maintain an apereture ring in its click-stop or return an SLR diaphragm to > > its full-open position is supplied by springs or clips whose force is > > carefully calculated to supply only the tension needed for the job. > > > > I've been photographing with Leica equipment for over 50 years. In that > time, > > I've needed very little servicing but that which I've had, returned my > > equipment to me in like-new mechanical and optical condition; and I mean > > like-new. Properly used and cared for, your Leica camera(s) and lenses > will > > be usable by your grandchildren > > and, if you're as old as I am, by your great grandchildren. What's the > number > > again? Leica shutters are crafted to be able to be used through 400,000 > > cycles before requiring service? Some incredible number. > > > Best, Seth LaK 9 > > >