Ted, Since all IR-reflecting green foliage is being recorded as red, you're not going to see much green in the histogram. I use FastPictureViewer to read directly from the X3F file, and the green channel is often squashed to the [left?], as in this screen capture of the '57 Fairlane 500.
Pardon the big snip, Gary!
Last time I spoke to Iliah Borg, that app. reads from the embedded JPEG, so there would indeed be no green or very little of it.
Here's the raw histogram for my chicken pic:
Here's the X3F if you would like to open it in FastPictureViewer:
http://kronometric.org/phot/xfer/SDIM8212.X3F
Here's the embedded JPEG with it's green histogram.
Unless FastPictureViewer has changed, I suspect that the green channel will look like the above and not like the "green" in the in the RawDigger histogram I've just posted. When all the green that was in the raw (camera space) gets pushed down toward zero, that indicates to me that a conversion to RGB had taken place. Of course, green material with no or little IR reflectance should still be converted to green.
Would be interested to know what FastPictureViewer makes of my X3F, if you get a minute.
Not criticizing your own method in any way, Gary, and not pushing mine as "better", just trying keep the record updated re FastPictureViewer.
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Ted