I am interested in putting together a scientific study of all current film products, and perhaps some Agfa, Efke, Konica, and other defunct companies' products that are still available. I intend to test and determine films' actual ISO values, underexposure latitudes, overexposure latitudes, and behaviors pushed and pulled several stops. I also wish to test these films in portrait and fine-art applications as well as the usual boring chart tests. In other words, I wish to extensively test films in real-world situations as well as in laboratory conditions that no one but scientists used anyway. Now I am presented with five problems in conducting this test for B&W: finding ALL B&W film products currently available, determining which developers out of the enormous multitude available to use, determining which methods of processing to use, figuring out which film format(s?) to use for my testing, and figuring out if anyone is interested in purchasing the results, as I am sure this project will cost a great deal of time and money which I can hopefully recoup. There's Ilford, Kodak, Fuji, (Agfa), (Efke), Ferrania & (Konica) (only color?), Foma, (Bergger), (Forte), Adox, and Rollei/Maco. I've heard Orwo might still make film and a few others. Did I miss anything? Where do I start with developers? Obviously D-76 is a must, as is HC-110, as well as Rodinal, but which others? PMK? I like Perfection Super Speed, although it isn't available commercially anymore. Are there any other commonly-used developers? I am pretty much all HC-110 and D-76 myself, so forgive my ignorance. I do all spiral-reel processing at the moment, metal if anyone's interested, but as there are variations in processing technique, I am thinking of going to something more standard, and as I have a high-speed B&W film processor now, I was thinking of using that for more consistant results. It isn't that my technique is bad, I am pretty much an adherent to the Ansel Adams technique, but I want to try to eliminate any variables. Does anyone who develops black and white with different processing techniques feel that there is a need to test results with each method in my study? Finally, I have found that the 120 format seems to be the most economical for testing. Would using a specific camera (Mamiya RB) and a specific F/stop throughout each segment of testing mar results for other formats and F/stops, or is it possible to draw results from one format and extrapolate relationships with others? The amount of work for this product will be immense, and the material will be pretty expensive, but I feel the results are worth having in B&W (pun intended). Does anyone feel they'd be interested in this data if I charged money for it? I wouldn't charge $100, but maybe something reasonable, like $35 for a comprehensive study. I'm just curious if anyone is interested. Charts and 1.6:1 & 1000:1 resolution graphs are fine for scientists, but I am a visual person, and as such would like to SHOW sided-by-side comparisons. Thanks for your replies!