I'd buy that film
Visual (red) ends at 700nm where Infrared begins and in the space of 700nm to 1mm we just tend to bluntly call it "IR", although EM radiation is a continuum and we are just examining a part of it. There are more subtle EM spectrum divisions, like DIN "IR-A" of 0.75 to 1.4μm.... Other standards give slightly different values - Wiki says that Astronomers use "0.7 to 2.5μm" as NIR...
Today we have "NIR" available to us, and if "700nm to 2.5μm" is good for Astronomers, it's good enough for me.
"Superpanchromatic" is great and self-explanatory too and could be used to differentiate between thinnest slice of the "green" (Aviphot) Vs fatter, more proper NIR slice (HIE) - if it existed.
Looking at EM spectrum an idea comes to mind: lack of definition of the immediate IR part of it. Because in the space of 300nm we have all the colors that we can experience - a mere 300nm wide space where we know that each color/wavelength has its own properties that we can and do exploit.
Visual (red) ends at 700nm where Infrared begins and in the space of 700nm to 1mm we just tend to bluntly call it "IR", although EM radiation is a continuum and we are just examining a part of it. There are more subtle EM spectrum divisions, like DIN "IR-A" of 0.75 to 1.4μm.... Other standards give slightly different values - Wiki says that Astronomers use "0.7 to 2.5μm" as NIR...
Today we have "NIR" available to us, and if "700nm to 2.5μm" is good for Astronomers, it's good enough for me.
"Superpanchromatic" is great and self-explanatory too and could be used to differentiate between thinnest slice of the "green" (Aviphot) Vs fatter, more proper NIR slice (HIE) - if it existed.
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