Archived posting to the Leica Users Group, 1997/12/13

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]
Subject: Re: [Leica] no. of blades
From: Alfred Breull <puma@hannover.sgh-net.de>
Date: Sat, 13 Dec 1997 12:33:12 +0100
 
At 16:55 06.12.1997 +0800, Leslie Tseng wrote:
>Please help me with these questions:
>(1) Which Leica M/LTM lens has the largest number of blades 
>    (to form the diaphragm)?
>(2) Which RF/VF lens has more blades than Leica lenses?

I counted the (visible) blades of some of my lenses:

N of
blades         lens

12             2/50 Summar 1935, 1937
10             2/50 Summitar 1939, 1950
10             2/50 Summicron 1953, 1954, 1962 (coll LTM & M, rig M)
15             1.5/50 Summarit 1953 (LTM) 
15             1.9/73 Hektor 1933
9              1.4/35 asph Summilux 1997
5              4.5/38 Biogon :) 1961

Hope it helps.