2:1 I find produces a lower contrast - but it is faster. I read in an old
manual that this mix was useful for multiple printing after the first
printing, which might be contrasty 1:1, followed by layers at 2:1. I've
used this approach myself usually with the second and third coatings. I'm
curious about 3:1 though. I suspect that it would allow you to increase
the gum/pigment ratio and avoid staining, because you have more gum in
proportion to pigment and sensitiser. But I wonder if it is also more
contrasty. Perhaps Betty Hahn used this mix more because she was working
on fabric. I recall she made some comments about the differiences of
working on fabric as opposed to paper.
>
>The article shows her gum printing on cloth, and reproduces a couple of
>her gums in green on "Rives" (presumably BFK), which look great.
Yes it was those pictures that first inspired me, and then I did a class
at college - haven't stopped since then..:-)
>
>This book ... to be found used here and there.... is excellent throughout.
>(In my opinion the sequel, Darkroom 2, was not nearly as interesting.)
A great book indeed. A real incentive to the intuitive photographer.
Cheers
Hamish
>