Re: Some Kallitype observations
Very interesting work.
Curious about your results with gold toning. I get very blue-black
shadows with gold toning with sodium citrate with virtually every
paper I have tried.
I also get more contrast, as the gold toning tends to reduce the
highlights slightly, which agrees with your finding about "whiter
Are you using the 5% KOX as a one-shot solution? How does it compare
in printing speed to 20% Na citrate?
FWIW, I proceeded to do developer-toner combos of sxs run prints and
found the following:
a) 5% KOX - Au toned >>> cool brown shadows, tan-mauvish highlights.
b) 20% Na citrate - Au toned >>> cooler shadows and whiter
highlights rel. to a).
c) 5% KOX - Pd toned >>> warm browns throughout tonal range
d) 20% Na cit - Pd toned >>> cooler browns than in c); slightly
warmer than b) across the tonal range.
e) 5% KOX - Pt toned >>> as in c) but browns are slightly darker.
f) 20 % Na cit - Pt toned >>> very similar to d).
What I was interested in doing was establishing combos (under my
working conditions) that would generate subtle color changes in the
otherwise B/W Kallis. Double-toning also holds promise and all this
becomes more apparent when the prints are viewed together.
Sandy King has shown this in his Unblinkingeye article. Other
factors (water quality, humidity, sensitizer components, paper, etc)
also contribute to the tones obtained.
On 5-Sep-06, at 11:44 AM, Don Bryant wrote:
Don Bryant, you do kallis, correct?
I have used potassium oxalate to develop kallitypes - once. I started out
with a virgin mix of PO at 20%. I developed my first print and was greeted
with a dark purple looking print. Immediately I realized 2 things:
1) The PO increased the speed of the kallitype when compared to the same
exposure developed in sodium citrate.
2) I liked the tone/color of the print.
I then adjusted my exposure time and tried the PO developer again. Much to
my surprise the print had the same tonal color as the sodium citrate
developed prints. At that point I saw no advantage to using PO for
kallitypes and dumped the mix.
My 2 cents,