RE: Selenium-toning Van Dyke Brown prints
Richard, I guess the subject line of the message confused you; because I was actually replying Sam about gold/thiourea toning of Vandykes, not Selenium toner (which was the originating subject). Regards, Loris. -----Original Message----- From: Richard Knoppow [mailto:dickburk@ix.netcom.com] Sent: 27 Eylül 2006 Çarşamba 04:00 To: alt-photo-process-l@usask.ca Subject: Re: Selenium-toning Van Dyke Brown prints This is then the opposite of what it does to silver-gelatin. Selenium tends to tone the finest grains first. since they are the least sensitive they tend to be in the denser areas of the image so the shadows of a print tone before the highlights. This is supposed to be the problem with using Selenium to protect silver images. If toning progresses far enough it will tone everything but partial toning will tend to split tone to some degree. Has anyone tried a polysulfide toner, like Kodak Brown Toner, on van Dyke? On conventional silver emulsions KBT tones uniformly so it can be used for partial toning. It would be interesting to know what other toners for silver-gelatin will work on other processes, for instance, would Nelson's Gold work on van Dyke? --- Richard Knoppow Los Angeles, CA, USA dickburk@ix.netcom.com ----- Original Message ----- From: "Loris Medici" <mail@loris.medici.name> To: <alt-photo-process-l@usask.ca> Sent: Tuesday, September 26, 2006 9:35 AM Subject: RE: Selenium-toning Van Dyke Brown prints I was told that it's not a proportional toner; it tones the shadows and the highlights at the same rate/time. But you can see its effect a little bit quicker in the highlights. Therefore if you use it diluted and/or watch very closely and snatch on the right time, you may get a split tone effect. Regards, Loris.
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