Re: Developing sheet film in open-ended PVC tubes

Bill,

>
>BTW, I do all my film work (and print work with Pt/Pd) in Jobo
>drums. While I have a Jobo machine one can use (most of) their drums
>on a plain old Beseler rolling agitator. I don't see the advantage
>of open tubes in trays (in the dark) if one can easily use tubes in
>the light unless there's something I'm missing.

Yep, that is exactly what I though when I read that article years
ago. Why bother with open-ended tubes when you can just put caps on
the tubes and have the advantage of daylight processing? But time
passes and we learn. The advantage to the open ended tubes is that
you can cover them with developer (they sink in developing solution)
and develop with minimal agitation procedures.

It is also an extremely simple solution for those who do not get even
development with tray development and/or who have a proclivity for
scratching or gouging their negatives with shuffle development.

Sandy

>
>
>
>>Oh, I think I know the article you are referring to. I have also seen it
>>very long time ago but can't remember either. I think it might be in
>>Darkroom Technique (or the name before that), but I thought for
>>Bibliography, you only need to cite the original idea rather than the
>>variations afterward.
>>
>>If I come across it I will let you know.
>>
>>Dave S
>>
>>----- Original Message -----
>>From: "Sandy King" <sanking@clemson.edu>
>>To: <alt-photo-process-l@sask.usask.ca>
>>Sent: Wednesday, March 31, 2004 12:00 PM
>>Subject: Re: Developing sheet film in open-ended PVC tubes
>>
>>> Dave,
>>>
>>> It was not Phil Davis. Phil introduced the BTZS type tubes in his
>>> book Beyond the Zone System but in this type of development the tubes
>>> are capped on each end and and development is carried out in a water
>>> bath with the lights on.
>>>
>>> In the article to which I refer the author recommends placing the
>>> film in open-ended PVC tubes and then developing the films in a tray
>>> containing the developer, with the lights off of course.
>>>
>>> Sandy
>>>
>>>
>>>
>>> >Sandy,
>>> >
>>> >If I remember correctly, it was Phil Davis. The procedure should be
>>> >described in one of his book "Beyond The Zone System." While this is from
>>> >memory, I think it is correct since the tubes are also known as BTZS
>>> >(abbreviation from the title of the book) tubes.
>>> >
>>> >Dave S
>>> >
>>> >----- Original Message -----
>>> >From: "Sandy King" <sanking@clemson.edu>
>>> >To: <alt-photo-process-l@sask.usask.ca>
>>> >Sent: Wednesday, March 31, 2004 11:26 AM
>>> >Subject: Developing sheet film in open-ended PVC tubes
>>> >
>>> >
>>> >> A number of years ago someone wrote an article that was published in
>>> >> one of the national magazines that described how to develop sheet
>>> >> film in open-ended PVC tubes in trays. This procedure offers some
>>> >> advantages over normal tray development in that it gives 1) very even
>>> >> development with no edge hot spots, and 2) minimizes the possibility
>>> >> of scratching that many experience in shuffle agitation.
>>> >>
>>> >> I am describing this procedure in a current writing project and would
>>> >> like to give credit to the person who originally suggested the
>>> >> procedure but I am unable to locate it. Can anyone on the list
>>> >> provide any details to help me locate the article.
>>> >>
>>> >> Sandy
>>> >>
>>> >>
Received on Wed Mar 31 12:01:05 2004