Regarding the Gum Proportional Sizing, I developed this system years ago =
in order to have better tone separation at the low values of kalli, pt, =
pd or cyan prints, specially with more textured papers.=20
This result is easilly achieved ( with the added benefit of a higher =
Dmax ), by printing a clear coat of GBC, before printing the ferric =
process (same neg).=20
I do not shrink the paper. Because I am working with a transparent gum =
image I don=B4t find it necessary. In fact I like the result better if =
the paper is not pre shrunk. On large prints ( 40cm x 50cm ) a very thin =
line of lower contrast (approx. 0.7 of a mm) can be seen on the edges, =
but if the image is carefully centered I find that it improves the final =
look of the print. Within the image area, unexact registration (again, =
both images must be carefully centered), can no be seen.
The green color of the gum was chromium oxide.=20
Luis was right, and the reason was long printing times. Easy to clear =
with a 0.5% HCl bath.
15F, minus 32C ?!!!!
It is 18C wmlaven@well.com (64F) in Lisbon and I am freezing!!!!
Just kidding.
But you know what Judy, I lived in NYC for approx. 5 years and Winter or =
Summer it still is my favorite city.
Carlos Gasparinho
SMTP: nop51076@mail.telepac.pt
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