Looking at revamping my lenses and getting the above combination, spoke to some Canon techs at a recent trade show and they think it would work but has anyone tried it?
I am looking to sell my 70-200 f4 is and 300f4 to fund the venture so curious to hear if anyone has used it and how the autofocus performs and ideally if some has used this setup and the 300f4 how they compare.
I getting into weddings so need a 70-200 and because of this have ruled out the sigma 120-300.
Thanks

