Quote Originally Posted by Leigh B View Post
Macbeth did its homework.

- Leigh
How does a photograph of the color checker look when shot on Infrared film? Does the green patch "light up" like crazy?

I'm saying film (red-extended) is sensitive to infrared reflected by green leaves. And film (any) is sensitive to ultraviolet reflected by periwinkles.

This is what the Zone VI modifications were meant to address (except UV... you are supposed to use a UV filter), and this advantage of Zone VI modification would not be fairly tested under studio lighting of a Macbeth color checker.