I enjoy being able to casually examine various books on interesting photographic processes, and hence I have skimmed Dr. Arentz's book. Far be it from me to comment on the methods and techniques used by those whose results speak for themselves. However, even a casual reading of Dr. Arentz's book reveals a heavy emphasis on densitometry and testing. It is important to know that Dick ( if I might use the first name ) was, I believe, at The University of Michigan with the much admired and sorely missed Phil Davis. If heresay is to be believed, Dr. Arentz ( an oral surgeon I think )took one of the late Mr. Davis's courses in photography. The two became friends, Dr. Arentz is said to have studied with Mr. Davis, and-as they say-the rest is history. It would be expected that Dr. Arentz would be familiar with, and use, the BTZS methodology. As far as understanding Platinum and Palladium printing, a more accessible text might lead one to the Weese and Sullivan book on the subject.
Last edited by Mahler_one; 02-23-2009 at 11:23 AM. Click to view previous post history.