[rollei_list] Re: VoigtlanderApo Lanthar
- From: Jerry Lehrer <jerryleh@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Sat, 13 Aug 2005 17:41:46 -0700
Richard.
"Softness"? Hell NO!! Every Apo-Lanthar I have ever seen or
used was painfully sharp. I never took one apart or researched
it as you do, so I never knew the configuration.
Jerry
Richard Knoppow wrote:
> ----- Original Message -----
> From: "Marvin Wallace" <Marvin0@xxxxxxxxxxxxxx>
> To: <rollei_list@xxxxxxxxxxxxx>
> Sent: Saturday, August 13, 2005 4:15 PM
> Subject: [rollei_list] VoigtlanderApo Lanthar
>
> Does any one have experience with the legendry Voigtlander
> Apo Lanthar?
> Does any one know why they reach such high prices.
>
> Regards,
> Marvin.
> P.S. SMILE PHOTOGRAPHY IS FUN!
>
> I don't have an Apo-Lanthar so can't answer this as asked.
> However, FWIW, the Apo-Lanthar is a Heliar type lens
> reportedly using Lanthanum glass in one or more element.
> This is probably true, Lanthanum glass is used in a great
> many lenses designed after WW-2. Rare earth glass allows
> getting combinations of high average index with lower
> dispersion than is available in conventional glass. This has
> an advantage in many designs of being able to reduce all
> aberrations.
> There is an earlier Voigtlander lens called the Lanthar,
> this is a Cooke Triplet type.
> The Heliar is capable of excellent performance. The Kodak
> Ektar used on the Medalist camera and also available as a
> 105mm, f/3.7 lens, and the shorter FL Kodak Enlarging
> Ektars, are all Heliar type lenses, albeit designed
> according to a patent by George Aklin, which uses the
> additional surfaces to improve marginal correction.
> I think the high price of the Apo-Lanthar is partly due
> to its being a sort of cult lens and probably also because
> relatively few were built. Heliars can have some odd off
> axis softness and are popular as portrait lenses because of
> it. This may also be true of the Apo Lanthar. In general,
> the Plasmat type is a better choice for LF work. It is the
> basis of most current LF lenses, like the Schneider Symmar,
> and of most current high quality enlarging lenses.
> The Heliar type was used by Voigtlander, who originated
> it, by Dallmeyer as the Pentac, and the above Kodak lenses,
> but was not widely exploited by the industry in general.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx
>
> ---
> 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
---
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:
