Re: HIE processing, added density, turbulence and more..

[Ian D Wilson <idw@xxxxxxxxxxxxxxx>]

I made the big mistake of listening to the "perceived wisdom" for
processing HIE when I started, and discovered the hard way...

I've been developing other B&W films for 20 years using Paterson System
4 tanks, and have always been a "twister".  In other words, I agitated
the films during development by rotating the spool in the tank (first
10s of each minute) using the special slotted handle provided for the
purpose by Paterson.

When I started using HIE, all sources implied it was better to be an
"inverter" (i.e. agitate by inverting the whole tank, 2 or 3 times every
minute, rather than by twisting the spool).  

The first four films I put through (using the "inverting" method) all
had the characteristic dark marks aligned with the sprocket holes. 
Being thoroughly disenchanted, I went back to my old "twisting" ways,
and I've never had the problem since.

So: let's twist again, like we did last Summer!

-- Ian.

--------------------------------------------------------------
Dr Ian D. Wilson         |  Email:  iwilson@xxxxxxxxxxxxxxx
Principal Engineer       |  WWW:    http://www.telemedia.co.uk
Telemedia Systems Ltd.   |  Tel:    +44 (0) 1223-477000
Mount Pleasant House     |  DDI:    +44 (0) 1223-578378
Cambridge CB3 0RN        |  Fax:    +44 (0) 1223-506282
England                  |  Mobile:         0467-473594
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