Regis wrote:
I have a new Canon 400 II DO f4 prime lens that I am using now. Wonderful detail from this lens
at a price of $6,900. But this lens allows me to use the Canon 1.4x III and the Canon 2.0x III convertors
for the extra reach of 560mm and 800mm with auto-focusing showing great detail.
Thank you, RichardSM.