Archived posting to the Leica Users Group, 2001/02/02

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Subject: Re: [Leica] Specks in new Leica Lens
From: "matt" <mahv@xtra.co.nz>
Date: Sat, 3 Feb 2001 17:06:26 +1300
References: <B6A0D5D2.54AA%howard.390@osu.edu>

A Leica apologist in full swing; God forbid.

- ----- Original Message -----
From: "Martin Howard" <howard.390@osu.edu>
To: <leica-users@mejac.palo-alto.ca.us>
Sent: Saturday, February 03, 2001 3:23 PM
Subject: Re: [Leica] Specks in new Leica Lens


> matt jotted down the following:
>
> > However the lenses had never been handled since they left the factory,
> > therefore the natural assumption is that the specks were there when they
left
> > the factory.
>
> Unless Leica has hit upon the solution for teleportation,
someone/something
> had to physically move the lens (in its package) to get it from the Leica
> factory to wherever you were when you inspected the lens, which means it
was
> quite possibly subject to jolts along this journey and, since AFAIK Leica
> lenses are not hermetically sealed, variations in temperate and air
> pressure.  These two conditions alone, along with the myriad of variables
> such as exact quality of those exact packaging materials, the route taken,
> the weather, the exact qualities of the lens and conditions affecting its
> manufacturing, etc. ad nauseum mean that just about anything could have
> given rise to the specks you notice.
>
> My point is that there is no reason to automatically suspect lapses in
Leica
> QC because you find deviations from theoretical perfection in a "new"
lens.
> The world is a vast, dynamic place, and with limited empirical data and
> theoretical understanding (a sample of two and little or no knowledge of
the
> exact circumstances surrounding manufacturing, QC, and transportation)
> you're just not in a very good position to say much about correlation, let
> alone causality, within it.
>
> M.
>
> --
> Martin Howard                     | "Go sell crazy somewhere else.  We're
> Visiting Scholar, CSEL, OSU       |  all stocked up here!"
> email: howard.390@osu.edu         |                    -- Melvin Udall
> www: http://mvhoward.i.am/        +---------------------------------------
>

In reply to: Message from Martin Howard <howard.390@osu.edu> (Re: [Leica] Specks in new Leica Lens)