I would like to get a 1.4X teleconverter to go with the following gear: 1) An N8008s 2) An F3HP 3) A Tamron 200-400 f5.6 AF lens 4) Numerous Nikon MF lenses Ideally, the teleconverter would provide AF capability for my MF lenses on the 8008s and would work in MF mode on the F3HP. Thanks for your assistance. George