Direct reversal of B&W film is not new. I did this back in the 60s and 70s, using the Arneleon 1 formula, quoted in The British Journal of Photography Almanac 1961. If you can develop a B&W film normally, you will find the process fairly straightforward. My favorite films for the process was Adox14 and PanF 35mm films: both thin emulsion films. 120 film 5x4 or whatever, can be processed in the same way using Arneleon 11, which is designed for double emulsion films. The bleach used in the Arneleon system is made up with potassium dichromate, as opposed to the potassium permanganate in the Ilford formula, and a 10% hypo solution is added to the first developer to control the highlights. The Ilford system is simpler to make up and probably works as well. See the PDF http://www.ilfordphoto.com/Webfiles/20061291034093.pdf A Google search found this link, http://www.angelfire.com/wi/spqrspqr/photo/bwreversal.html Excellent transparencies, having a long tonal range can be obtained using a direct reversal process, 128 to 1 being claimed in the BJP Almanac for the Arneleon.
HTH Clifford Somerset UK.----- Original Message ----- From: "shannon Stoney" <shannonstoney@xxxxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx> Sent: Sunday, January 09, 2011 4:22 PM Subject: [pure-silver] Dr5 process I've been playing with my new stereo pinhole Holga camera some more. I figured out how the viewfinder works on top: it's not wide angle after all. There isn't much info online about this camera. But I figured out that you are supposed to use slide film in it, because of the way the stereo photo viewer works. I had some color slide film in medium format, so I shot that in it. Then i found a place online that processes all kinds of film by a new process to make b & w transparencies. HEre it is: http://www.dr5.com/ This guy claims to be able to process regular negative film with this Dr5 process to make transparencies! Does this work? It's kind of expensive, but interesting. --shannon============================================================================================================To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there. ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1191 / Virus Database: 1435/3367 - Release Date: 01/08/11 ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.
