Depends on the volume but for trials (at least) get a 8x10
paper drum, one that has dividers to separate 4x5 sheets,
load it in your changing bag (note you may need to invest in
a larger bag) and process on the tabletop in room light. i
use a Unidrum and Uniroller for roll film and use an Omega
Drum (Simmard) on the same base for the little sheet film I
do. I presoak and the Uniroller seems ideal since it
reverses direction automatically. The presoak extends
processing times a bit but the constant agitation seems to
shorten the processing times by about the same amount so I
start with the "large tank" time and temperature and adjust
if not satisfied with the contrast.
Much has been written on the concept, lots of Google hits
and the old Jobo newsletter are a goldmine of rotary
processing info using theirs or any other rotary equipment.
David Starr wrote:
> On Sat, 20 Oct 2007 12:27:00 -0400, "Robert Chin" <bchin_us@[EMAIL PROTECTED]
>
wrote:
>
>> I'm sorry if this has been answered before. This is a legit question
so
>> please bear with me.
>>
>> My set up is not optimum. I do not have a dedicated darkroom (for now
at
>> least). I've done many many rolls of film over the years. I throw
>> everyting into a changing bag, load up a reel and no problem.
>>
>> I'm getting ready to process 4x5 sheet film for the first time. It
requires
>> a bit more space to handle the sheet film than rolls. Since I do not
have a
>> dedicated darkroom, I can't fill the tanks with the necessary
chemicals,
>> leave them on a tabletop, and just lift the film holder from tank to
tank in
>> the dark.
>>
>> So my question(s) is/are simple: I've heard that because the
processing
>> tanks for 4x5 film take so long to fill, uneven development could
result.
>> Is this a real problem, or is it the opinion of someone really
obsessive?
>> Would I be better off making a light tight space to do this?
>>
>> Advice welcome from all.
>>
>> Thanks.
> Can you fill the developer tank in advance, and lower the film holder
into it in
> total darkness? If so, that takes care of the filling. Then, you can,
in the
> dark, take the top off the tank, dump the developer and pour in the stop
bath.
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> Retired Shop Rat: 14,647 days in a GM plant.
> Now I can do what I enjoy: Large Format Photography
>
> Web Site: www.destarr.com
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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