jingler wrote in post #14982009
i have offten wondered about the point of the 1.3 crop
dont get me wrong the mk2 is a fantastic camera but you dont get the reach of the 1.6 crop or the wide angle of the full frame
thanks
For me the 1.3x is the perfect balance between the 1.6x and FF..
you have better IQ than 1.6x and yet you do not have to have a MASSIVE buffer and other things to get respectable fps and burst rates..
plus you get a bit more reach over FF...it isnt a massive different, like 1.6x, but still different..
The 5D2 was an amazing camera for me, but the 1D4 is THE camera for me..
so to each his own! 
I would SERIOUSLY look at the Rokinon 14mm/2.8!! Useable on Full frame, CHEAP, SHARP, etc
But, no AF...who cares, with 14mm and ~F/4-8 set at 1m and you can literally point in any direction and get in focus sharp images..
I have the same issue with needing an UWA, and the Rokinon 14 is where my $ will be going..
fwiw
good luck!