Fine, Alex. I really don't have time to explain all this to you. There are different curves for TMax RS (different from regular TMax developer, for HC-110 at various dilutions, for D76, various pyros, on and on, including curves that are the straightest of any current reliable film on the market. Even more remarkable is how TMX can produce nearly identical overlapping curves with a very long straight line from R,G,B respective exposures, even with long exp recip factored in. This is because these films were originally engineered to replace a number of films at once, including Super-XX and Color Separation Film. Tri-X came close to getting axed too. Only the "all toe" character of Plus-X left a void in the new Kodak scenario. Pictorially, I really prefer TMY to TMX, but it is sensitometrically similar. That "hump" in the curve which you legitimately point out is easily removed with the right development technique. Due to its unique spectral versatility, TMX was even once offered in glass plates for precise astrophography and microphotography purposes. I've done hundreds of specific densitometer plots with these films, using various developers, dilutions, times, temps, specific narrow-band light sources, so am probably not the best person to argue with on this particular subject. Of course, in creative personal photography all that counts is whatever look we like. But often it truly helps to understand basic distinctions. And with a freezer full of 8X10 TMax (both speeds), I've certainly put my money where my mouth is! Glad I bought it at a third of the going rate.