Re: BTZS tubes

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From: Victor Loverro (victor.loverro@verizon.net)
Date: 02/02/01-10:51:13 PM Z


----- Original Message -----
From: "Judy Seigel" <jseigel@panix.com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Thursday, February 01, 2001 11:40 PM
Subject: Re: BTZS tubes

>
> Just for curiosity sake I'm wondering if any of the folks who've had
> trouble with tray development of negs have tried BRUSH development in the
> tray. In my experience it solved tray problems and avoided tube problems
> -- open tube rolled in tray gave pretty good neg at reasonable price, but
> had problems of its own... With brush dev. in tray you can move from tray
> to tray for stop, etc., just like real photography, and, especially if you
> slow down the development a tad, works very nicely. No problem with
> scrunching in & out, back not clearing, slow pour, etc.
>
> Judy
>
Over the years I have developed a number of different size negatives in
trays using brush development. I use oversize flat bottom (Cescolite) trays
and, depending on size, do one or two at a time. For 5x12 and 7x17, I do two
at a time. For 11x14 and 12x20 I do a single sheet at a time. I have found
the best brush for me to be the Kodak 2" camel hair (?) lens brush. I brush
the film surface completely once every minute. For two negatives, I keep
them separated with one hand, holding down the film I am brushing by the
edge only. Be careful not to touch the image area of the film, as it can
leave a finger (glove) print. I am currently developing in PMK. Tests
have shown that there is no variation in edge density or stain, and never
any streaking. I have never had any scratches processing film by this
method. For 5x7 and 8x10 I still use Jobo drums and have lately been using
Rollo Pyro, especially for Tri X, as it has reduced base fog considerably.

Victor


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