Here's something that contains good information, including data for a DeVere
colour head: http://phototechmag.com/a-better-choice-than-vc-filters/
As you can see, the primary adjustments are to the Yellow and Magenta
filtration. The Butzi (?) article explained a way of keeping the exposure
times uniform. (It was something equivalent to adding or subtracting
VC-neutral-density filtration.)
On Jul 19, 2017, at 12:36 PM, Myron Gochnauer <goch@xxxxxx<mailto:goch@xxxxxx>>
wrote:
I only print black and white so does that mean the color head is irrelevant for
my purposes?
No. Many of us have used colour heads for B&W. If you use VC paper you may
need to experiment a bit to determine the best settings for various grade, as
well as exposure times. There should be info on this somewhere on the
internet. Years ago there was a good article about it in Photo technique or
Darkroom & Camera, I think. Maybe someone remembers. Author may have been Paul
Butzi (?)
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