jjstafford wrote: "By studio film, I mean it is unfriendly to most daylight conditions in terms of contrast control and color response. TMax is wonderful when you can make the light match the film, for example in a studio with controlled light. Note that the published characteristics are derived from tungsten lighting (as most B&W film is)."

I must say that I've never thought of TMX or TMY as being only for studio use. TMX is one of my favourite films for high brightness range landscapes. This is an example of a fairly contrasty scene (11 to 12 stops, if memory serves) that TMX recorded detail in everywhere. As for the spectral sensitivity, Kodak's published sensitivity curves are adjusted to give the response to an equal-energy spectrum for two different resulting densities, unlike other manufacturers.