Hi Guys,

I happen to stumble upon this page,

ProVideo Coalition.com: Stunning Good Looks by Art Adams | Cinematography (http://provideocoalition.com/index.php/aadams/story/tiffens_goes_into_production_on_t1_far_red_filter/P1/)

Very good write on the Tiffen T1 IR, shows you the how it reacts with normal color charts, even on a vectorscope.