My next door neighbor, Yong-ran Zhu and I have the same Jobos, the exact water supply, darkrooms which are at the same depth in the same dirt, indentical block walls, many identical lenses, same films and developers, we have stood on the same spot and photographed the same subject, we use the same paper and paper developer and STILL have different times, results and looks to our prints. As Thomas pointed out, it's your entire system including exposure philosophy which will determine the outcome..Evan Clarke