Re: Alt Photo Processes & Negative Density

On Mon, 26 Jan 2004 Ender100@aol.com wrote:

> I am looking for a reference regarding various Alt Photo process and
> information on the negative densities that they require and or the density ranges they
> can accomodate. Does anyone know of such a reference?
>

Mark, if someone claims to provide that information other than in the MOST
general way (which any book from Keepers of Light to Chris James's current
Book of Alternative Photographic Processes should have) -- don't buy any
bridges from them. The variables of paper, timing, drying, coating,
exposure light and so forth are very great, plus new developments.

For instance, supposedly kallitype needs a negative with a range like
platinum... now with the ferric chloride additive it can print pretty much
any neg that will print in silver gelatin.

Any good omnibus book however should at least give the ballpark range
under each process.

Judy
Received on Tue Jan 27 01:52:40 2004