[rollei_list] Re: Whiteface T with Xenar question
- From: "Raid Amin" <ramin@xxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Thu, 19 Mar 2009 20:49:08 -0500
Thanks for the information, Carlos.
I have a 2.8D Planar and a 3.5F Planar,plus an older Rolleiflex wth 3.5 Tessar
[late model], but no Xenotar or Rolleiflex T.
I like the look of the Planar images a lot. I also like the Sonnar 135mm 4 lens
on the Tele.
Raid
________________________________
From: rollei_list-bounce@xxxxxxxxxxxxx on behalf of Carlos Manuel Freaza
Sent: Thu 3/19/2009 8:36 PM
To: rollei_list@xxxxxxxxxxxxx
Subject: [rollei_list] Re: Whiteface T with Xenar question
I always say tests for old lenses almost don't make sense, these are some Chris
Perez ( a lens tester fan) tests for the Rolleiflex T Tessar, Rolleiflex 3.5E
Xenotar and Rolleiflex 2.8E Xenotar at f8:
Rolleiflex 3.5E Xenotar(l/mm):
Center Mdl Edge
96 96 68 f/8
Rolleiflex T Tessar:
68 68 42 f/8
Rolleiflex 2.8E Planar:
96 96 76 f/8
http://www.hevanet.com/cperez/MF_testing.html
According these tests, Xenotar 3.5/75 and Planar 2.8/80 are sharper than the T
Tessar very clearly, the numbers are different regarding the lens test quoted
by Sanders completely (and BTW Planar and Xenotar are also better than the
Tessar T in the test quoted by Sanders).
Talking about an old lens, I never consider "tests", I see the results I obtain
taking photographs, that is the best test. If I follow these two so different
"tests", I could take a wrong decision.-
Carlos
--- El jue 19-mar-09, Raid Amin <ramin@xxxxxxx> escribió:
> It looks as if the T has the highest resolution at F 8.0
> with Pan F.
> This is amazing. Not even the 2.8 Planar can match it at
> 8.0.
>
>
>
>
>
> Raid
>
>
>
> Ilford Pan-F developed in PMK 3.5 Tessar Old Standard
> Center Edge 3.5 59
> 21 5.6 59 30 8 59 33 11 66 47 16 66 47 22 66 47
>
> 3.5 Tessar Automat 1 Center Edge 3.5 42 17 5.6 75 37 8 75
> 47 11 75 47 16
> 66 59 22 59 53
>
> 3.5 Xenar MX-LVS Center Edge 3.5 32 25 5.6 32 25 8 57 32 11
> 64 36 16 64
> 40 22 57 40
>
> 3.5 Tessar T Center Edge 3.5 66 42 5.6 84 42 8 94 42 11 75
> 59 16 75 59
> 22 66 59
>
> 2.8A Center Edge 2.8 24 15 4 37 15 5.6 37 15 8 60 35 11 60
> 42 16 60 37
> 22 53 37
>
> 2.8F Planar Center Edge 2.8 68 48 4 68 54 5.6 76 68 8 86 68
> 11 86 76 16
> 86 86 22 68 68 ------------------------
>
>
>
>
>
> From: rollei_list-bounce@xxxxxxxxxxxxx
> [mailto:rollei_list-bounce@xxxxxxxxxxxxx] On Behalf Of
> Sanders McNew
> Sent: Wednesday, March 18, 2009 10:52 PM
> To: rollei_list@xxxxxxxxxxxxx
> Subject: [rollei_list] Re: Whiteface T with Xenar question
>
>
>
> Carlos and Richard, thanks for your replies. Carlos, are
> you
>
> certain about your statement that the Tessar and the Xenar
>
> must be identical because F+H's requirements were the
>
> same? In this instance I'm not so sure of that.
>
>
>
> My understanding is that Zeiss reformulated the Tessar for
>
> the T by adding lanthanum to the glass and flattening the
>
> lens a bit, thereby (I am told) improving the lens's
> performance.
>
> I have no direct experience with the T's Tessar to
> verify this
>
> claim. However, I have seen lens tests online that show
> the
>
> T's Tessar performing up to Planar standards, far above
>
>
> what might be expected of an earlier Tessar, or a Xenar:
>
>
>
> http://photo.net/medium-format-photography-forum/0003e1
>
>
>
> John Lehman's l/mm test produced surprising results and
> I
>
> am wondering what others on the list might have to say
> about
>
> them.
>
>
>
> In any event, it appears the T's Tessar was
> meaningfully
>
> improved over earlier versions. Does anyone know whether
>
> Schneider had made similar improvements to their Xenars
>
> by 1975? I am guessing not but that is only a guess.
> Would
>
> the Xenars by 1975 have different lens coatings vis-a-vis
>
> their 1950s siblings?
>
>
>
> Sanders
>
>
>
>
>
>
>
> * From: CarlosMFreaza <cmfreaza@xxxxxxxxx>
> * To: rollei_list@xxxxxxxxxxxxx
> * Date: Wed, 18 Mar 2009 19:35:00 -0300
> Hi Richard:
> The Rolleiflex T with Xenar lens is
> referred by
> Prochnow in the Rollei Report 2 _second and reviewed 2001
> edition_ ,
> it's the Prochnow Register 185/2, PR 185/2. The T with
> Xenar 3.5/75
> lens was manufactured from the beginning of 1973 to August
> 1976, 3000
> units from serial numbers T2.310.000 to T2.320.449.
> Rollei specs for Xenar and Tessar lens were identical and
> then the T
> Xenar is at least as good as the T Tessar in theory.-
>
> Carlos
>
> 2009/2/18 Richard Knoppow <dickburk@xxxxxxxxxxxxx>:
> >
> > ----- Original Message ----- From: sanders@xxxxxxxxx
> > To: rollei_list@xxxxxxxxxxxxx
> > Sent: Wednesday, March 18, 2009 12:06 PM
> > Subject: [rollei_list] Whiteface T with Xenar question
> >
> >
> > I just won a Whiteface T, a very late model
> > (s/n T2316742) and to my surprise it sports
> > a Xenar taking lens -- not the reformulated
> > Tessar that I had expected. Did the Xenars
> > of the 1970s make any improvements on their
> > 1950s-era forebears? Any thoughts about
> > the Xenars on late Ts would be appreciated.
> >
> > Sanders
> >
> > I've looked at _Rollei Report 2_ Claus
> Prochnow's book. According
> to
> > this no Rolleiflex T cameras were made with Xenar
> lenses. Prochow
> identifies
> > your serial number a PR 185/1, this appears to be his
> own system, he
> gives
> > the factory number as K-8 but that may cover a number
> of variations.
> The
> > serial number is in a block from T 2.199.000 to T
> 2.249.999 dated 1966
> to
> > 1970 . Note that not all of these numbers were
> necessarily used so the
> exact
> > place in the series can not be determined from them.
> > Schneider has a complete list of all their serial
> numbers on line.
> It
> > takes a bit of digging to find it but its there. Check
> this against
> the
> > serial number of the Xenar to see if it fits the age
> of the camera.
> Its
> > possible it was replaced at some point, and if so, the
> finder lens
> should
> > also have been replaced. However, Prochnow, while
> highly reliable, is
> not
> > always complete and someone else on the list may have
> further
> information.
> > Perhaps Rollei did use some Xenars on this camera.
> >
> > --
> > Richard Knoppow
> > Los Angeles, CA, USA
> > dickburk@xxxxxxxxxxxxx
> ---
> Rollei List
Yahoo! Cocina
Recetas prácticas y comida saludable
http://ar.mujer.yahoo.com/cocina/
---
Rollei List
- Post to rollei_list@xxxxxxxxxxxxx
- Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe'
in the subject field OR by logging into www.freelists.org
- Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with
'unsubscribe' in the subject field OR by logging into www.freelists.org
- Online, searchable archives are available at
//www.freelists.org/archives/rollei_list
Other related posts:
