Archived posting to the Leica Users Group, 1996/10/04

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

To: Leica list <leica-users@mejac.palo-alto.ca.us>
Subject: Re: Emotive lenses
From: "George R. Zachar" <102413.1577@compuserve.com>
Date: Fri, 4 Oct 1996 21:08:46 -0400

++++++++
The color and contrast that a lens can see 
gives it the "character" you were talking about.  This is  done with glass 
makeup (chemical additives) not the phisical shape.  The coating may 
indirectly help this ability by absorbing stray light, but the refractive index and 
material makeup of the glass gives it character.

John
+++++++++++
All true. So, to be literal, it is is the quality and composition
of the glass, in addition to its shape, that sets Leica optics apart.

Is there an objective benchmark against
which to measure those parameters?

George Zachar