Archived posting to the Leica Users Group, 1998/12/07

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Subject: RE: [Leica] Mechanicals and optical quality
From: "Kotsinadelis, Peter (Peter)" <peterk@lucent.com>
Date: Mon, 7 Dec 1998 15:46:11 -0800

Alexey,

Nice try but the only thing you are saying is that older lenses may have
better mechanics.  Yes this is important but composite materials of today
can be made to a far more accurate degree than the old brass lenses.  Add to
that electronic control for 99% aperture and shutter accuracy and in the end
you are saying that modern lenses and cameras may actaully be better.  I
shutter to think that......Pun intended.

Peter K

- -----Original Message-----
From: Alexey Merz [mailto:alexey@webcom.com]
Sent: Monday, December 07, 1998 6:29 AM
To: leica-users@mejac.palo-alto.ca.us
Subject: [Leica] Mechanicals and optical quality


"Kotsinadelis, Peter (Peter)" <peterk@lucent.com> wrote:

>Please tell me how the construction of a lens adds to the actual
>photographic quality of an image.

In a new lens it does not. In an old lens (mechanical) design and
construction quality assure that focus, aperture settings, and 
lens alignment are correct.

These parameters are critical to optical performance.
..........................................................................
Alexey Merz | URL: http://www.webcom.com/alexey | email: alexey@webcom.com
            | PGP public key: http://pgp5.ai.mit.edu/ | voice:503/494-6840