I am a 5D Mark II user and after the launch of D800 and 5D Mark III, I am now considering to switch system.
The only concern I have now is the AF capability.
Currently I am using the Canon 200/2.8L USM and also interested in the Canon 100-400L IS USM. And I found no counter parts in Nikon.
I see a 180/2.8 in Nikon which is not AF-S, and I heard that is slow and not suitable for sports, which is mainly why I would have it.
And I am interested in the 100-400L IS USM but I can only find AF-S 70-300 or AF 80-400. The later one is considered to be slow AF again, which I want to buy it for, e.g., birding.
70-200/2.8 is too heavy (and expensive) for me to carry it around most of the time.
And I am thinking 70-300 is too slow, I was thinking a slow 100-400 and a fast 200/2.8 combination should work for me, but I can't find it (with fast AF) in Nikon.
Could you help me to resolve this dilemma? Thanks.