I can't get the 100 - 400mm L series and 2X Canon tele extender to auto focus. Is this something that will ne manual only? I recently purchased the Extender 2x III since it is "fully compatable" Is there a autofucus mode that will work. I have th...
I have a 7D also. Wanted to compare with my 5D III that I got recently. I agree with you but thought that carrying the extender and the 70 -200 would lighten my pack for a quick airline trip without serious photos (Navy reunion trip)
