[rollei_list] Re: Rollei 35S, SE

Marc and Richard -

It is a true Heliar design (as opposed to a "genuine" Heliar); if it
were not, I would have made note...


Eric Goldstein

--

On 9/27/07, Richard Knoppow <dickburk@xxxxxxxxxxxxx> wrote:
>
> ----- Original Message -----
> From: "Marc James Small" <marcsmall@xxxxxxxxxxx>
> To: <rollei_list@xxxxxxxxxxxxx>; <rollei_list@xxxxxxxxxxxxx>
> Sent: Thursday, September 27, 2007 7:23 PM
> Subject: [rollei_list] Re: Rollei 35S, SE
>
>
> At 05:17 PM 9/27/2007, Eric Goldstein wrote:
>  >The modern Cosina/Voitlander Heliar 50/3.5 is purported by
> at least
>  >one of the test magazines to be one of the best corrected
> lenses in
>  >all of 35 mm photography. It is supposed to have it's best
> corrections
>  >wide open... f/3.5 is its true design speed for this
> format...
>
> Eric
>
> I believe that this is a "Heliar" in name only,
> not by design.  Cosina has so cheapened the
> naming traditions as to render them useless.  We
> have had a fairly heavy discussion of this lens over on the
> Leica Users' Group.
>
> Marc
>
>
> msmall@xxxxxxxxxxxx
> Cha robh bàs fir gun ghràs fir!
>
>     It would be interesting to know what this lens is.
> "Heliar" is just a trade name which has become a generic
> name for a particular arrangement of elements. As you know
> it was used by Voigtlander for two different arrangements.
> Hans Harting's first "Heliar" designs had a negative
> cemented element facing the outside. Later he turned this
> around. According to Kingslake the original arrangement was
> a rather poor lens. The version with positive elements
> facing out was better. Voigtlander originally called this a
> Dynar but but liked the name Heliar better so changed it.
>     As I mentioned before not many designers have worked
> with this basic type. L.B. Booth and Fred Altman patented
> versions and I have seen the type in some Japanese lenses
> but other basic arrangements seem to have proven more
> profitable to designers.
>
>     In any case, its hard to know what a "genuine" Heliar
> is. The trade name probably belongs to whomever Voiglander
> is now (Zeiss) but in casual use it designates the five
> element cemented design we are familiar with. A lens can
> certainly bear a well known generic or commercial name and
> still be awful. One can certainly find poor examples of
> Tessar type lenses.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx
>
> ---
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