I was touring the makgadikgadi this December in Botswana and here is some interesting Raw NIR images I have taken.
Here are some boabab trees in the NXAI salt pans
Here is of the salt pans
Here is of an elephant covered in mud, note the previous images containing people where the people is a purple as well and then look at the elephant covered in mud.
Here I took an image with a healthy bush next to a dead bush, see the difference.
You can go and download these images and process them at http://www.infragram.org/ and see the NDVI and IR Image of these images. We will be shortly adding this camera to one of hour talons to do some aerial photography.