Anyone using super telephoto lenses (STL) on the AF 100? I have been using a Nikon 200-400 F4 AF-S VR rental with my AF 100 for a kite surfing doc. I have an opportunity to buy this lens. I like this lens, but I would also like to use it’s auto functions with the AF 100 for (some) sports shooting. I suspect the Birger for Nikon is awhile in coming. Has anyone used the Canon 100-400 F4.5 IS L with the AF 100? If so are you happy with the results? Is the smart decision to wait for the Birger Canon mount and the Canon EF 200-400mm f/4 L IS USM Extender 1.4x if I want a STL comparable to the Nikon 200-400 F4 and some auto function control? Lost in long lens land!


