I have a AFS300 2.8 lens and Nikon 2x teleconverter as well as a Sigma APO 70-200 2.8 EX and a Sigma APO 2x Teleconverter. With both of these I suffer from the auto focus hunting, as if the systems can not find focus. I have heard of one other with this problem, has any one had this and what causes it. Please any help. Terry James [EMAIL PROTECTED] http://www.wildside.gen.nz
