Archived posting to the Leica Users Group, 2000/11/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The last 15 years I have developed more than 5000 BW films and made at least 50.000 prints. I have used all kinds of film/developer and print paper/developer combinations. Hundreds of test films were handled in all kinds of dilution, over and underdevelopment, and matched with scores of paper types and print developers. My darkroom has two enlargers, (condensor and diffusor) and I use a Macbeth densitometer to measure all densities of prints and negatives. I have a very large Excell database with all figures and I have drawn numerous socalled Jones diagrams to match print curves to film curves. I have published more than 20 articles about BW darkroom technique in the last 5 years and continue to publish in several magazines. I gave numerous courses in Zone System Technique and my library is full of books about sensitometry, chemistry and BW processing. I have been teaching BW techniques at several professional oriented education centers and most of my lectures and articles get a positive response. I have studied Mr Davis'books incidentally and found a number of shortcomings in his approach, wchich I will not document here. I was one of the first to use Xtol and my research findings did not correspond with the ones of Kodak. So I had a full two hour meeting with Mrs Silvia Zawadski, inventor of Xtol and senior engineer product development of BW products and Mr Dick Dickerson, worldwide manager product and development BW. They agreed after a lengthy exchange and analysis of my results that my conclusions were valid and that their published data were based on some assumptions that could not be reproduced consistently. Based on this track record I was under the impression that my knowledge and experience of BW processing had some substance. Today I am proven wrong! Mr Johnston, after his customary lenghty and indepth study of my accomplishments has judged that I "don't know beans about sensitometry, or about black-and-white materials and how they behave." How could I dare to disagree with his solid fact findings and stern judgement! So today I am picking up the telephone and try to reach Mrs Zawadski to tell her I know nothing about BW processing and she has misjudged my capabilities. I am also withdrawing all my articles about BW that are in the pipeline and I will inform the editors that I have mislead them the last 10 years, pretending that I had some figment of experience with BW materials. Mr Johnston has uncovered the truth, which I have been able to disguise the last decade for an audience of tens of thousands of readers and hundreds of students. Erwin