Michael: Wow. thanks that all makes sense to me. The one thing I might note is I use a Kodak gray card to make my readings. I double check the foliage with the meter but I usually trust the gray card reading.I can't imagine giving up my meter which I know and love for anything else. I am one of those who believe in making the most skilled use of existing, known, equipment. Your information about IR definetely will make me more skilled. Your point about needing to expose for the low densities is what I thought.(posted 9886 days ago)