RE: I'll never double coat cyano again -- was what I've learned about cyanotype thru PDN

I'm not too familiar with cyanotype, but with some processes you'll may find
that double-coating needs a longer exposure, if you didn't do that already.

Liam

-----Original Message-----
From: ryberg [mailto:cryberg@comcast.net]
Sent: 06 June 2005 23:07
To: alt-photo-process-l@sask.usask.ca
Subject: I'll never double coat cyano again -- was what I've learned
about cyanotype thru PDN

Several of you have said that double coating increases DMAX. I had always
believed that. But the tests I showed yesterday led me to doubt it. I
exposed pairs of Stoufer strips, one on single coated cyano, one on double
coated. I did six exposure times. All of these showed the same or better
DMAX with single coating. Further, the single coat always showed a longer
scale. You can see the results on my web page--I added these new tests at
the end of the earlier cyano note.
    I HOPE that I have optimized the images for the web and that it won't
take too long for a dial-up, though the final image of the 6 pairs is pretty
big.
             http://home.comcast.net/~cryberg/index.html
Thanks, Charles Portland OR
Received on Mon Jun 6 16:43:52 2005