Judy Seigel (jseigel@panix.com)
Thu, 21 Oct 1999 18:39:09 -0400 (EDT)
On Thu, 21 Oct 1999, Larry Watson wrote:
>
> It's easy to change to different solutions if your developing process
> requires it, and avoids having to pour liquid in the dark into small openings.
> He uses different lengths of tube to indicate different times needed
> in the developer. Of course it means you need to work in the dark the
> same as with tray processing. It didn't sound as economical with
Lith film takes red safelight.
> chemistry as closed tube processing, although one need not worry
> about exhausting the small amount of chemistry in the closed tube.
> But it would certianly be cheap, and he claims superlative results.
Half full tray is MORE than enough, fuller sloshes. Also I suspect you
could put 2 tubes in 1 tray.
> It sounds like he uses a large diameter tube, something like 12"
> in an 11x14 tray, 12 litres of chemestry. After putting the tubes
you can't fit 12 litres in an 11 by 14 tray... even 4 litres would
overflow, I think. I probably used 2 litres. Remember, with rotation,
including in an open tube, you don't FILL the tube, but let a certain
amount slosh in the down part... in fact too much liquid could impede
disruption of the laminar layer, which is what rotation, agitation, etc.
have to do.
> in the fix, he removes the film and fixes further with hangers in tanks.
> >Judy Seigel wrote
> >To Matthew: My own "skills" with Jobo, such as they were, are long
> >obsolete, but I note that the process I was using ultimately required
> >SLOWER rotation than the slowest speed their mechanical motor could then
> >provide. I put a marker on the tube & rolled by the clock... very tedious
> >of course, but times for that film were only 5 minutes & I did 4 sheets at
> >once.
There I am speaking of the jobo... which needed slower rotation for KPC
film than machine of the day could do, and where agitation to perfectly
match grey scale in the neg was critical. A marker might be useful for the
clear open tubes as well, when or if agitation is a critical variable, but
lith times were only 2 minutes or so, and agitation was fine simply at
"slow."
Judy
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| Judy Seigel, Editor >
| World Journal of Post-Factory Photography > "HOW-TO and WHY"
| info@post-factory.org >
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