infrared and XP2 redux

I suppose I’m a little despondent about the digital IR results to date, but there again it’s early days. Seeing that the old Yashica will be fixed sometime in the near future, I wonder what results I’d get if I loaded it with XP2 and used the Hoya R72.

Thanks to Rob Novak for showing me why this idea won’t work

From usenet:

Rob Novak wrote:

XP2’s response drops greatly after 630nm, and has virtually no response to wavelengths below 660nm. The R72 filter’s transmittance curve doesn’t even start until 700nm, reaching peak transmittance at 750nm.