Archived posting to the Leica Users Group, 1998/04/12

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]
Subject: Re: [Leica] Leica and Minolta identical calculation
From: dannyg1 <dannyg1@IDT.NET>
Date: Sun, 12 Apr 1998 19:08:34 +0000
 
> To keep it from turning, it takes a lot more "guts" that take up
> space and weight in the lens

The technical terminology for the apparats that keeps the front group from rotating is a 
'double-helical'. A single helicoid lens rotates and is, by design smaller, because it has 
only one helical. 

DG