Hi, Piers, long time no see you.
Yup, the time is past so fast, I still remember how to looking for school
in UK for her.
Thanks for your information, although I'm not sure the real age of my 2
Dagor lenses, they should be over a hundred years :P
I heard that the lens mark "C.P. Goerz Berlin" is early version, I believe
that should be 1st & 2nd version.
My "Dagors" ;-
Goerz Berlin Doppel-Anastigmat Serie III 210mm F6.8
https://farm8.staticflickr.com/7161/6644428363_befe5d0e70_o.jpg
Goerz Berlin Doppel-Anastigmat Serie III 300mm F7.7 (so heavy & like a
grenade)
https://farm9.staticflickr.com/8368/8520372307_f045068461_o.jpg
https://farm9.staticflickr.com/8232/8520370905_cc370627e6_o.jpg
Cheers,
Michael
On 9 April 2015 at 22:29, Piers Hemy <piers@xxxxxxxx> wrote:
> Welcome back, Michael - and congratulations to your daughter on getting
> into Durham, doesn't seem that long ago that she was looking for a UK
> school!
>
> Here is what Lens Collector's Vade Mecum has to say about Goerz Double
> Anastigmat (slightly cut down) - I guess yours must be from very early 20th
> century:
>
> ==
> Goerz, C.P. A.G, Berlin -Friedenau, Germany.
> Double Anastigmat Series 111 f7.7 3.5-35in (1892), from 1892
> 1.625-4.74-16.5in later.
> It was suggested to use 18cm for 13x18 at f6.8 but it would cover 21x27cm
> closed down. It covers 70-90°, and the f7.7 series was continued after 1900
> when the shorter versions were redesigned to work at f6.8- though there may
> have been some redesign optically.
>
> Series 111 1900 f6.8 40, 60, 75, 90, 100, 120, 135, 150, 165, 180, 210,
> 240, 270mm in 1922.
> Longer sizes were made, e.g. 300mm in 1910. The increase in aperture was
> due to the use of new glass in 1900, but the faster lenses were not made in
> all focal lengths. The new version was still for 70-90° angle. Thus 90mm
> will just about cover 5x4 but 75mm will definitely not. The new glass seems
> to be hard and wears well, but many are now yellow due to the balsam
> colouring, and some cases of balsam failure have been seen. These lenses
> will be from 1900 to 1904, when Goerz began to name their lenses.
> ==
>
> It goes on to talk about the numerous Dagor lenses, which seem to be later
> than D-A.
>
> Piers
>
>
> -----Original Message-----
> From: olympus [mailto:olympus-bounces+piers.hemy=
> gmail.com@xxxxxxxxxxxxxxxxx] On Behalf Of Michael Wong
> Sent: 09 April 2015 13:20
> To: Olympus Camera Discussion
> Subject: Re: [OM] Lotus
>
> Thanks Wayne.
>
> I'm not sure about the age of my lens. The lens was designed in 1892 and
> the first version is F7.7 for all focal lengths. Mine one should be 2nd
> version that F6.8 for below 12" and F7.7 for 12" & longer focal length. I
> have another one 12" with F7.7 too. There was a lot of version for Dagor.
> The F6.8 & F7.7 versions are normal 60º view angle and Carl Zeiss Jena
> (after bought Goerz) released a series of F9 version that 100º wide view
> angle. It is easy covering 8x10 with shorter focal length but I have never
> had one because its price very high.
>
>
>
> Cheers,
> Michael
>
> On 9 April 2015 at 20:05, Wayne Harridge <
> wayne.harridge@xxxxxxxxxxxxxxxxxxx
> > wrote:
>
> > Nice work Michael !
> >
> > How old is that lens ?
> >
> > ...Wayne
> >
> >
> >
> > -----Original Message-----
> > From: olympus
> > [mailto:olympus-bounces+wayne.harridge=
> > structuregraphs.com@xxxxxxxxxxxxxxxxx
> > ] On Behalf Of Michael Wong
> > Sent: Thursday, 9 April 2015 9:49 PM
> > To: Olympus Camera Discussion
> > Subject: [OM] Lotus
> >
> > The pictures were taken in Jun 2014 with Goerz Berlin Doppel-Anastigmat
> > Serie III 210mm F6.8 and Ektachrome E100G slide film. Kodak E100vs &
> E100G
> > are my favourite slide films but it's so pity that they are discontinued.
> > Fortunately, Kodak TMAX B&W films and Kodak B&W film developer, stop
> bath,
> > fixer, hypo-clearing, photo-flo are still being produced :-)
> >
> >
> > https://farm4.staticflickr.com/3846/14434982054_ed13b1b8d4_b.jpg
> >
> > https://farm6.staticflickr.com/5475/14249495750_602c62d31e_b.jpg
> >
> >
> >
> >
> >
> > Cheers,
> > Michael
> > --
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