I dont have either one, Keith


I shoot surfing also .... but cant justify buying a 1.4 or 2x because all of the sports I shoot are fast in nature.


If I understand correctly, the 1.4 & the 2x dont work in auto focus on my 5DMKII or my 7D.


The only use I can see right now for a manual focus multiplier is shooting the moon. I'm thinking rental next time Hale Bop comes around.[]