Date sent: Tue, 05 Mar 1996 20:37:28 +1100 (EDT) From: Jesse David Andrewartha [s9406213@minyos.its.rmit.EDU.au] Subject: 8"x10" colour IR To: photoforum@osfmail.isc.rit.edu Send reply to: photoforum@listserver.isc.rit.edu
I need some help!
I recently acquired for the purpose of my imaging portfolio 100' of Kodak Aerochrome 2443 colour infrared film (format: 9.5" x 200"). My intention is to cut the film into 8"x10" sheets and apply the film to pictorial imaging. This has succeeded, but to a point.
My original plan when it came to the processing was to cross process the film using low temperature altered C-41 chemistry. When developed in normal EA-5 chemistry, the backing is eliminated to leave a clear rebate. However, the film emerged from the altered C-41 process with a heavy magenta layer beneath the emulsion. I know this is not fog, as it covers the film evenly and does not alter colour when wet, whereas the emulsion is blue when wet. This has got me stumped. I can print through the cast in enlarging, however, this results in an unwanted neutral density and is a problem I would like to solve rather than put up with.
Does anyone have any ideas on what I could do or which direction I can take to aim towards so I may eliminate this magenta backing. I have begun to play around with various chemistries, but any lead would be much appreciated.
The following is the C-41 process I used, which works well with 35mm and 70mm colour infrared, but does not work with Aerochrome 9.5", as detailed above
C-41 developer 12 min wash 4 min E-6 bleach 6 min wash 4 min E-6 fix 6 min wash 4 min Hardener* 2 min wash 8 min Photoflo 1 minTemperature was maintained at 22 degrees Celsius
If anyone has any suggestions whatsoever, please mention them- I would be incredibly grateful.
Thanks heaps,
Jesse