Whenever I don't understand something I just get another source until I get it. Photography is certainly a house with many churches and there are so many ways to achieve results, so many ways to look at methods and concepts. Can you visualize in your mind how the zone system works? Like learning another language all you have to do is visualize the functions and you've got it.
I'm also an information junkie who will read any book about a subject that interests me more than once.
I am too information junkie so I have read a lot of books of ZS, sensitometry etc.
As someone wrote here, I too have found that the Adams writings are one big reason for all puzzling around the ZS.
The old serie was really bad, the lastest was cleaner. But for better explaining of ZS can be found from Adams basic photography series, wrote by Alan Ross.
When reading pile of ZS books or books touching it, I have found that it is not uncommon that even authors of these books has get it all wrong...
No wonder that ZS has become a kind of mystic silver bullet which requires a lot of endless calibration, testing, ... Instead of being simple and very powerful tool.
I am sort of graph junkie also, so I tend to do some testing just for fun or hobby, not to get better results as photographer.
The ZS has created some different school of thoughts. One is strictly with a idea that the visualized negative must be printed with a fixed printing exposure and paper grade. As they have it all calibrated..
One has only adopted ZS as tool for fitting whole subject contrast range to be printable of that magic grade #2 etc.
Right now I'm thrilled on my zone work and am working on calibrating my other lens.
Perhaps I didn't understand that very well, are you really calibrating ZS for each lens?
Is the contrast or flare of the lenses that great that it need to take account during development (and exposure) and it can be corrected during printing phase?