Quote Originally Posted by David Lyga View Post
I guess we'll have to leave it at the 'pragmatic shortcoming', Michael, as I am hardly that sophisticated. But, you are most likely correct and maybe some will delve further into this. - David Lyga
Get Richard Henry's book if you are interested in this. However he was testing 1 degree spot meters so in the end it probably isn't directly applicable, although it still makes for interesting learning.