Canon EF 200mm f2.8 L II USM with Canon Extender EF 2x III AF speed test + sample images
Amazon.com : Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses : Camera Lenses : Electronics,LCF-21: Foot for Nikon Lenses,Canon EF 200mm f2.8 L II USM with Canon Extender EF 2x III AF speed test + sample images,Should I get the Canon EF 70-200mm f/2.8L IS II and 2X Extender or the EF 100-400mm f/4.5-5.6L IS II Lens?