"WILLIAM GRUENEWALD" wrote in message
ink.net...
I've been trying to print this material using my Beseler 45 Universal
enlarger Head without success. Filtration is Y17, M00, C10. Recommended
exposure time, according to Shule's Book "Cibachrome Printing", would be
22
seconds as a start for an 8X10. However, following these guidelines, I
get
an exposure which can hardly be seen - so dark!! (I develop with the Jobo
CPP and Ilford Ilfochrome Chemicals, as per their instructions). Leaving
the filtration (colors) alone, I then made several other exposures with
the
following times: 50 seconds, 70 seconds, 90 seconds, 110 seconds, lens
set
at f4. Needless to say, the prints got lighter so you could see whats on
them, however, I still could use an additional 20 seconds exposure -
makeing
this 130 seconds total for a "normal" print. My questiion is this: Is
this
normal - seems to me to be way to long of an exposure for a 8X10 print!
I'm
no darkrooom expert, but when the slide starts to buckel at about 40
seconds
due to heat, something has to be wrong. Appreciate any responses.



I have a 45 MXT with the Computer Colorhead. Those are long times. Real
long. Even a dense slide would be less than a minute -normally. I'd verify
the chemistry. Did you use distilled water to mix? Did you get even the
littlest drop of bleach in the developer (it'll smell like the worst rotten
eggs ever if you did)? The bleach is a very acidic mixture and if you get
it into the developer it will reduce the alkalinity and therefore the
activity.

Hope this is helpful.

Jim