It seems that this was NOT Kodak's fault about the IR sensitivity. Read Sean Reids explanation, like NO ONE seems to read. The acute angle of the image circle of rangefinder lenses cause vignetting on flat digital sensors. To minimize this, Leica used a crop factor AND a thin-as-can-be cover glass. Plain glass in your house window is an IR filter, and the thicker the glass, the better the IR filter. The 0.5mm thin glass over the Kodak sensor specified by Leica to achieve image sharpness apparently has minimal IR filtering properties- a trade off for sharpness. Blame Leica instead of Kodak, but blame no one but rangefinder design! The R-D1 has the same problems, but less so for several reasons, but one is the greater crop factor. SO what if you have to use a filter? What is the big deal using an IR cut filter? Will my fellow Leicanuts look at the big picture here? This sensor was the only way to exploit the leica lenses, get over it, use the camera if you want. I am holding on it until Leica allows a menu selection of non-coded lenses which activates a focal-length specific color and vignetting program to the DNG file.
