After several years of contemplating the investigation of the BTZS approach to photography, I decided, this winter to give it a go. My background is not an academic one by any means so I almost flipped out when I first opened the book when it arrived in the mail! Well, this was a waste of money, was my initial reaction. Tried to read book....put book down.......tried to read book again....put book down again.......tried to read again, but this time little bits and pieces started to sink in! Then more, and then a little more. Well after really giving it a fair chance and an honest effort I have to say I'm sold. What a revelation. Yes, it is a very complex approach, but we work with very complex materials, don't we? Very scientific materials, to say the least. But after one does some very EASY and FAST testing, the wealth of information is absolutely mind boggling. This is not a ploy to convert anyone to this system but rather just letting anyone know who has contemplated it as I did to try it and see if it isn't the "best kept secret in photography." I received great help along the way from Jorge as well as Fred and Dennis at the View Camera Store, and suggested to them they should consider being a sponsor on APUG which they did to my delight. Yes, this is technical at first but once through that, it really simplifies the whole approach and I must say that I have produced some of the nicest printing negatives I have ever worked with. Some almost print themselves! Way cool. What is different is that one starts with the paper and fits the neg to that. I had not done that in the past and it really works well.