As an aside on the possibility of bleaching before selenium toning, one would need to use a home brewed selenium toner, as the commercial versions are formulated with ammonium thiosulphate. So you will be fixing out the print even as you try to tone it!![]()
Partly true, but remember that while some fixing might be going on, at the same time all that silver is being attacked by the selenium toner. In fact, although I haven't tried it myself, the linked APUG thread makes clear it is in fact possible to do it with normal commercial selenium toner. Especially see the comments by snallan/Steve. He just recommends giving another 1/4 of a stop exposure to compensate for loss in highlight detail. And even than, you probably have to accept some highlight loss.
(there was a url link here which no longer exists)
By the way, I would be interested to see some results of pre-bleaching with selenium. If anyone has some examples somewhere on the internet or here on APUG, post a link.
Marco
