Great answers to your question!(posted 9503 days ago)At its simplest the Zone system (or any system or way of working that you come up with that is based on the way films, papers and chemicals really work -- IE "Sensitometry") is nothing more than a means to make sure that the subject you see out in the field, and the "photograph" you see in your mind of that subject, will come out as you "saw" it when you expose and develop the film and make the print.