Why do you feel that you need to explain yourself to me, JR.
I merely stated the canon 100-400 is a Great lens. I can attest to it, because i own it.
JR1 wrote:
No one has said it isn't a great lens, and it is, no post of mine has ever said it is not, just that independent reviews rate the sigmas higher when everything is taken in to account
The Sigmas are also newer spec wise 4 stop VR/IS instead of 3