development of old CS: Agfa CT 18
Ron Frank
Why do you think this is NOT an E-6 process film?
Anywho, AGFA CTx film is a Process 44 or E6 process color
reversal film (slide file).
The front of the film canister will say Process 44/E6 (at
least USA film is marked so). Ask your friend to open his eyes
and read the canister.
Let's just hope your friend has his exposure technique down
since this film has little lattitude for errors in either
direction.
Ron
Bertrand WAELS wrote:
>
> A friend of mine has exposed a full roll of
> AGFA CT 18 135-36 from Agfa-Gevaert.
> it is not a E-6 process film ....
>
> Do you know this film ?
> What is his sensibility ?
> How do develop this ?
> Developing in C-41 ?
>
> It were the pictures of the first birthday of his children.
>
> Keep smile, he doesn't forget to put a film in his camera...
Scott Dorsey
In article <33eae...@scooby.nildram.co.uk> rhde...@nildram.co.uk writes:
>Ron Frank <TES...@test.com> wrote:
>
>>Why do you think this is NOT an E-6 process film?
>
>>Anywho, AGFA CTx film is a Process 44 or E6 process color
>>reversal film (slide file).
Nope.
CT18 is the old Agfa ball and chain coupler chemistry (which I might add
was greatly superior to E-6 and gave phenomenally lovely pastel tones).
I really miss the old Agfa stuff.
I don't know any place still processing the Agfa materials, but Rocky
Mountain Film Labs might. The Russians and Czechs are still making
films based on the Agfa chemistry (and I wish I could get them and the
processing here in the US.... it's nice stuff).
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
Ron Speirs
Helge Nareid <nar...@online.no> wrote:
: On Thu, 07 Aug 1997 15:45:44 -0600, Ron Frank <TES...@test.com>
: wrote:
: >Bertrand WAELS wrote:
: >>
: >> A friend of mine has exposed a full roll of
: >> AGFA CT 18 135-36 from Agfa-Gevaert.
: >> it is not a E-6 process film ....
: ... Agfa CT18 was an old favourite from days long
: gone by, and was developed in a proprietary Agfa process,
: I believe it was the same process which was used for the
: Agfachrome 50S and 50L films (and also the Perutz C19).
: The film predates E-6 by many years - I remember my father using
: it as early as the mid 60s. As far as I can recall, the film was
: taken off the market some time in the late 70s.
: I don't know of any labs which can process this film these
: days, unfortunately. It may be possible to have it developed
: to B/W negatives, but I would seek expert help before
: attempting it. One possibility is Rocky Mountain Labs, which
: I believe specialize in old emulsions. Another possibility is
: checking back issues of the British Journal of Photography
: Annual, which used to have a fairly large selection of formulae
: for colour processing in its technical section.
: Another faint possibility is to try to find a lab which can handle
: old Orwo (former DDR) colour slide film, which used a type
: of Agfa processing long after the process was discontinued
: in western Germany.
: - Helge Nareid
If you are intent on a do-it-yourself project, formulas for the old
Agfa process can be found in Patrick Dignan's book "Simplified Color
Processing Formulas". In reality, this would be an expensive and
time-consuming project because of the quantities in which you would
have to buy the chemicals.
I would agree with Helge's recommendation to contact Rocky Mountain
Labs in Denver. I haven't dealt with them, but from other postings I
have seen they do process old films such as the Agfa, as well as
ECN-2 (motion picture), E-3, E-4, etc.
Another comment on the old Agfa film and process: I used a few rolls
of this film in the 1960's and 1970's; its archival characteristics were
not very good, as these films have faded and changed color much more
than the Ektachromes of the period. The Kodachrome slides of that
period are quite unchanged, they don't look very good either, but that's
the way they were when they were new. But that's another story!
Ron Speirs
rsp...@xmission.com
rsp...@oecmed.com
(reply to both)
Richard Ross
Ron Frank <TES...@test.com> wrote:
>Why do you think this is NOT an E-6 process film?
>Anywho, AGFA CTx film is a Process 44 or E6 process color
>reversal film (slide file).
NO NO NO ! Modern CTx films yes, but:
CT18 is an old film, on the market long before E6 was invented. Why
not contact Agfa via their web-site at
where you'll find a e-mail address for tech enquiries.
I used to use CT18 exclusively in the sixties and seventies, lovely
stuff, albeit a bit grainy. Good luck :-)
Richard
**------------------------------------------------------
* Richard Ross
* RH Designs rhde...@nildram.co.uk
* England
*
** RH Designs - home of the StopClock f-stop enlarger timer
** and many other innovative darkroom products
** http://www.nildram.co.uk/rhdesign
**------------------------------------------------------
Darrell A. Larose
Scott Dorsey (klu...@netcom.com) writes:
> In article <33eae...@scooby.nildram.co.uk> rhde...@nildram.co.uk writes:
>>Ron Frank <TES...@test.com> wrote:
>>
>>>Why do you think this is NOT an E-6 process film?
>>
>>>Anywho, AGFA CTx film is a Process 44 or E6 process color
>>>reversal film (slide file).
>
> Nope.
>
> CT18 is the old Agfa ball and chain coupler chemistry (which I might add
> was greatly superior to E-6 and gave phenomenally lovely pastel tones).
> I really miss the old Agfa stuff.
>
And I am glad it's gone!!! When I was starting out in photography in the
early 1970's I shot a lot of Agfa CT-18, as it was cheap, I think it was
3 rolls of 36 processing included for about $10.00(cdn). The stuff was
shipped to NJ to Agfa's processing plant there. Yes it had nice muted
colours. But NONE of my CT-18 chromes have lasted the time. K64, Fuji
and Ektachromes form the same period are ok, but none of the Agfa has...
they have all faded and turned magenta.
² Darrell Larose ± http://livewire.newforce.ca/darrell ²
² Photo Technician ± ²
² Ottawa, Canada ± dar...@livewire.newforce.ca ²
Will Rose
Scott Dorsey (klu...@netcom.com) wrote:
: In article <33eae...@scooby.nildram.co.uk> rhde...@nildram.co.uk writes:
: >Ron Frank <TES...@test.com> wrote:
: >
: >>Why do you think this is NOT an E-6 process film?
: >
: >>Anywho, AGFA CTx film is a Process 44 or E6 process color
: >>reversal film (slide file).
: Nope.
: CT18 is the old Agfa ball and chain coupler chemistry (which I might add
: was greatly superior to E-6 and gave phenomenally lovely pastel tones).
: I really miss the old Agfa stuff.
For European landscapes it was marvellous. (When I moved to California
and bright sunlight I went to Kodachrome.) I wish the old CT was still
available, though.