[rollei_list] Re: Xenon is a Xenar!
- From: Eric Goldstein <egoldste@xxxxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Mon, 28 Mar 2005 16:03:03 -0500 (GMT-05:00)
Sounds like an interesting variant Patric but the math is confusing me... t=
wo cemented elements plus three individual elements is 7 elements in 5 grou=
ps total... no?
Eric Goldstein
-----Original Message-----
From: J Patric Dahl=EF=BF=BDn <jenspatricdahlen@xxxxxxxxxxx>
Sent: Mar 28, 2005 3:53 PM
To: rollei_list@xxxxxxxxxxxxx
Subject: [rollei_list] Xenon is a Xenar!
I have a pre-war Kodak Retina IIa (type 150) with the Schneider Xenon=20
2,8/50.
I thought the lens looked much different from the post-war Xenon on my IIc.=
=20
The rear lens group is made of two cemented elements, and there are three=
=20
air spaced elements in front of the aperture.
So this pre-war Xenon is actually the FIVE ELEMENT XENAR we have talked=20
about on the RUG before. It's sometimes called "Super-Xenar" in Schneider=
=20
litterature.
In "a lens collectors Vade mecum" they say: "This looks the same lens as th=
e=20
S-Xenar for Exakta from the reflections and external curves. Thus it is a=
=20
case where a triplet was used for a Xenon design [...] Perhaps Kodak merely=
=20
liked the prestige of having Xenon on their cameras".
(Not the same as the S-Xenar on Rollei 35 cameras. That's a four element=20
lens)
/Patric
Other related posts:
