Re: 10x8 Rollo Pyro Development

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From: Carl Weese (cweese@earthlink.net)
Date: 02/16/01-03:41:02 PM Z

David,

You definitely can process with ABC+ (rollo) pyro in trays--it just gives
remarkably different results from rotary processing in the same soup. The
aeration of rotary processing may make a big difference. I didn't care for
the results with TXT or BPF200 this way and do those films in regular PMK in
trays. HP5+ does quite well and can actually reach too high a contrast level
for Pt/Pd (which means it can easily reach the right level).

If you want to do the TXT in trays with ABC+, you'll need to experiment and
find your processing times. Regular PMK is a very good bet for TXT/tray
processing (but remember to wear gloves!!)

---Carl 

--
web site with picture galleries and workshop information at:
http://home.earthlink.net/~cweese/

----------
>From: Nash Computer Technology <nashcom@btinternet.com>
>To: Alt Photo <alt-photo-process-l@skyway.usask.ca>
>Subject: 10x8 Rollo Pyro Development
>Date: Fri, Feb 16, 2001, 3:06 PM
>

> Hi
>
> At last, I've splashed-out and bought a 10x8" back for my Arca-Swiss camera.
> I've just ordered a dark-slide and some Kodak Tri-X, and am now starting to
> wonder how to process the film!
>
> I've been using Tri-X in 5x4" format, and have been developing it in Rollo
> Pyro in a Jobo CPE2 with lift in a 2509 sheet-film drum.
>
> I can't afford a Jobo Expert drum and CPP/CPA at the minute, so I'm
> wondering what the options are.
>
> I read in the "New Platinum Print" that it's not possible to tray-process
> with Rollo Pyro, although I'm not sure why - surely (if I process one sheet
> at a time) constant agitation of the trays would be similar to the Jobo
> motion?  If anyone successfully tray processes with Rollo Pyro, I'd love to
> hear an exact description of the process.
>
> I've just thought about processing one sheet at a time in a Jobo print drum
> in my CPE2.  I seem to recall reading about possible problems with uneven
> development or uneven removal of the anti-halation layer.  Has anyone tried
> this method?
>
> I'm used to my current process which gives consistent results, and would
> prefer some method of easily obtaining similar results with the larger film.
>
> Thanks in advance
>
> David Nash
>
>

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