----- Original Message -----
From: "Daniel J. Mitchell" <DanielMitchell@xxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Tuesday, January 22, 2002 11:35 AM
Subject: [OM] loose lens?
> I just collected the Vivitar 90/2.5 S1 macro I got from e*ay yesterday,
and
> the condition worries me slightly. The glass is fine; there's a small mark
> in the coating on the front, but no fungus/scratches/dust -- the body
shows
> obvious signs of use, nothing critical -- but the lens itself is, somehow,
> 'loose'.
>
> The lens is structured in the following 'sections' (from the outside, at
> least):
>
> body mount
> aperture adjusting ring
> bit with aperture display
> bit I turn to focus
> inner bit that moves in and out when I focus (ah, precise terminology
> here..)
>
> The "join" between the aperture adjusting ring and the rest of the lens
is
> a bit loose; if I push on the aperture adjusting ring, I can slide it in
and
> out by about 1mm or so (I can tell this is happening by looking at the
> motion of the aperture numbers in the display window). When it's mounted
on
> a camera, I can feel it rattling slightly as I move it, because all the
> heavy bits of glass are further out than the loose bit.
>
> Looking at the back, all the screws I can see there seem to be tight
> enough; but it feels as if something further inside isn't tightened down
> properly, or worn, or something along those lines.
>
>
> I have a couple of questions for those that know this sort of thing:
>
> 1. is this likely to affect image quality? I've taken some test shots I'm
> going to get developed today, so I can see for myself -- but it seems
likely
> that it will, because it's moving the elements around in ways that they're
> probably not meant to be moved.
It may or not now. It may next week when it falls apart.
>
> 2. is this likely to be easily (at all, even) reparable? If so, is this
> fixable by hand, or is it a professional-only job?
If you have to ask, then you probably shouldn't do it yourself.
If you want to and can, get a quick estimate but, I would demand to
return it and try again for a better one rather than have this
(probably dropped and/or abused) one fixed.
Jon
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