I have been fine tuning the development parameter on a home brewed version of Harvey's 777, and came to realize that my data would be a lot easier to chart if I used semi-log graph paper. 'Where would I find that?' was my next thought. I turned to Google, and bing- up it came: http://www.csun.edu/science/ref/measurement/data/graph_paper.html A very handy little tool. I have been using this developer for about 4 months now, and so far, am very happy with it. I find that it works very nicely in high key studio lighting situations, as well as landscapes that include portions of sunlit snow. I know that there are more main stream developers, but I find that D-76/HC110/xtol sort of look quite similar to me. I have worked through PMK and Pat Gainers vitamin C variants in the last few years as well. I guess that it is just a phase I am going through. I know that 777 has been discussed extensively here and on other sites a few years ago, so I will hold off on any comments on how I use it until I can add beyond what has been said in the past..