From: Kris Erickson (kris.erickson@utoronto.ca)
Date: 10/10/03-10:22:13 AM Z
When I first started Cyanotype, a really good combo for me (producing
creamy results, esp in midtones and highlights) was Tri-x pan (i used
120 format), overexposed by two stops (i.e. rated 100 asa), and
overdeveloped by two stops (i.e. pushed to the 1600 dev. time--in the
HC110 dil. B developer I used, this was either 11 or 14 minutes--I can't
remember offhand; in either case, it was straight out of Anchell's "film
developer cookbook", and the back of the box). Development was precisely
what I always do it at--somewhere between 15 and 20 celsius ;-)
The resulting negative is ridiculously dense, requiring exposure times
of an hour or more in the platemaker I was using at the time (about
800-1100 units, I recall). The paper I used was a variety: unnamed
cotton rag, and Rives hp mostly.
The reasons I did it this way were a) expense (relatively cheap) and b)
to learn! I'm sure I could have tweaked a little more, but I didn't find
a need. One roll of test exposure (from four stops over to 2 stops
under, in 1/2 stop increments) determined the asa and exposure I wanted.
Good luck! Have fun,
Kris
Sandy King wrote:
> I received the following off-list request for information about
> cyanotype negatives. Unfortunately my experience with cyanotype is
> rather limited and I don't feel competent to answer the question. If
> anyone would like to respond to this I will pass the information on to
> the interested party.
>
> Thanks.
>
>
>
>
> I'm interested in making cyanotypes and found your web article,
> "Ultraviolet Light Sources for Printing with the Alternative Processes"
> to be extremely thorough and very informative.
>
> If you would be so kind, I'd be very grateful if you would please
> pass along the name of the film (and ISO you prefer) that gives the
> longest density range in negatives; thus producing the widest
> tonality for optimal printing results.
>
> In addition, please include the following:
>
> * name of film developer
>
> * developing temperature
>
> * developing time
>
> * agitation requirements
>
> Thanking you in advance for your time and help.
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