Re: Grainy Kallitype
C.Breukel@lumc.nl escribió:
Dan,
Do you re-use your developer, or use it one-shot? (perhaps a stupid
question, I did not do Kallitype for a long time) If you re-use it
perhaps try a fresh batch?
Best,
Cor
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*From:* dan jones [mailto:cacadanebay@pacbell.net]
*Sent:* dinsdag 3 juni 2008 5:24
*To:* alt-photo-process-l@usask.ca
*Subject:* Re: Grainy Kallitype
david...
most of my prints are 5x7 and i am using 10 drops of each solution and
applying with a rod.
as i mentioned i was getting very good results and then the grain
appeared. i am in the los angeles area and i have been around 50%
humidity in my work area. perhaps i should try brushing on the
coating (or trying 2 coats) and see if that makes a difference...or
perhaps there is a change in the paper stock...
the grain seems very even and there is no mottling
*/david drake <daviddrakephoto@sympatico.ca>/* wrote:
I have had this problem with my Vandykes using Platine, whereas the
Stonehenge paper has always worked well under the same circumstances.
I have always thought that it was due to Platine needing more humidity
to print. I'm fairly sure that a higher humidity allows the paper to
absorb more sensitizer. Using too much sensitizer could also be
problematic as the paper isn't able to absorb all the sensitizer in
areas, the area which are exposed on the surface end up washing away
in the clearing bath. This leaves a low dmax mottled print which could
be also said to be grainy.
Dan, how much sensitizer are you using and for what size of print?
Also, what is the Relative Humidity where you're working? I usually
coat in a room of around 60% humidity. This is apparently around
optimum level for all iron processes.
cheers
david
On 2-Jun-08, at 11:09 AM, dan jones wrote:
I have just started working with the process and have had a reasonable
amount of success so far. Today my prints started to get a very
pronounced grain pattern. the grain appeared with both digital and
camera negatives.
Could this be related to humidity/dryness of the coated papers? Or
could it be a chemical (ferric oxalate) problem? No change in paper
(stonhenge) or developer (sodium citrate). Coated papers are air dried
with a fan, no heat applied.
Thanks
Dan
david drake photography
www.daviddrakephotography.com
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Hello to all:
My work conditions for kalitipia are:
paper: Arches Platinum
Covering: brush, 2 layers.
Humidity: 55-60%
I have noticed that bigger humidity produces tones softer and smaller
contrast, but never spotted.
Greetings from Spain.
Excuses for my English, text translated by computer.
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