Do you see the little screws I mentioned? I'm sure someone has posted a copy
of the
parts page somewhere -- the screws are PUK 1.4x2.5 SB's, at "B-2" and "B-3" on
the
illustration, and hold CA-131700 to CA-131600. The play may be there, or the
threads may just be worn -- it's hard to tell without looking. But if they're
tight, that eliminates one problem that we see now and then.
The nice thing is that even with a little "slop", it will still make good
photos!
Benson Russell wrote:
> Thanks, Clinton, for the detail - looking in the back of the lens, at full
> extension, I can see the mechanism you've described. The movement seems to
> be in the outer helicoid thread (closest to the mount) - I can see a little
> of the shiny surface of the inside of the outer thread (mount assembly) and
> it moves relative to the black rotating part of the focus ring.
>
> I'm not entirely sure I want to tackle this, having bought the lens from a
> dealer who'll porbably take it back, or repair it under warranty. However, I
> am tempted just to hang onto it, now that I have it... can I do without
> it... (early symptom of zuikoholism? ag...)
>
> Much appreciated,
>
> Ben Russell
>
> Ireland
>
> > From: clintonr@xxxxxxxxxxxxxxxx
> > Organization: olyfix.com
> > Reply-To: olympus@xxxxxxxxxxxxxxx
> > Date: Tue, 24 Sep 2002 12:53:15 -0500
> > To: olympus@xxxxxxxxxxxxxxx
> > Subject: Re: [OM] 50/3.5 with a clunk
> >
> > Oops! Step Two -- Remove the lens mount. Turn the focus ring out, so the
> > lens is set for close focus. There are two guides that keep the
> > helicoid in line, and one plate that serves as a "cam" to adjust the
> > floating
> > element as the lens is focused. Make sure the screws for the
> > two guides are tight -- if not, tighten them.
> >
> > Step Three (and probably your problem) -- Look closely where the two guides
> > go
> > into the slots on the side of the body -- along that "ledge"
> > (just inside the helicoid threads) you'll see four tiny "+" screws (you may
> > need to turn the focus ring to get to all of them). They have
> > probably worked loose -- tighten them.
> >
> >
> >
> > julian_davies@xxxxxxxxxxxxxx wrote:
> >
> >> I can see this working if the focus ring moves on it's own, but if the
> >> front
> >> barrel moves as well, surely that is wear in the helicoid?
> >>
> >> Julian
> >>
> >>> from: clintonr@xxxxxxxxxxxxxxxx
> >>> date: Tue, 24 Sep 2002 18:15:52
> >>> to: olympus@xxxxxxxxxxxxxxx
> >>> subject: Re: [OM] 50/3.5 with a clunk
> >>>
> >>> Underneath the rubber grip are 4 set screws -- they're probably a little
> >>> loose. Tighten them evenly, then check focus. Replace the grip and glue
> >>> with
> >>> a little bit of contact cement all the way around underneath the grip.
> >>>
> >>> Benson Russell wrote:
> >>>
> >>>> Hello all, but particularly techies...
> >>>>
> >>>> I've just got a silvernose 50/3.5 with mint optics and body (ST£160,
> >>>> serial
> >>>> no 105509) BUT...
> >>>> I've noticed a slight bit of play in the focus ring (0.2mm front to back,
> >>>> 0.27mm side to side) and consequently the front barrel. Not much, just a
> >>>> tiny clunk as I move it back and forwards.
> >>>>
> >>>> Certainly looks lovely otherwise, any comments? A good copy lens?
> >>>>
> >>>> Ben Russell
> >>>>
> >>>> Ireland
> >>>>
> >>>> < This message was delivered via the Olympus Mailing List >
> >>>> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> >>>> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
> >>>
> >>>
> >>> < This message was delivered via the Olympus Mailing List >
> >>> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> >>> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
> >>>
> >>
> >> < This message was delivered via the Olympus Mailing List >
> >> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> >> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
> >
> >
> > < This message was delivered via the Olympus Mailing List >
> > < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> > < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
> >
>
> < This message was delivered via the Olympus Mailing List >
> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|