So here is a little different question for you all. I have a 1dv mkiv and want to go back to full frame. To date I haven't used every feature that the 1d has, but I really like the size and feel of the 1 series. I am on the fence about just buying the 5d to complement the mkiv. I shoot a few things, landscape, (starting to get into portraiture), wildlife. So I could benifit from both a 1.0 sensor and the 1.3 for extra reach. The highest ISO I have really used is 6400 which I like how well it cleaned up in post, so I don't think I really need 50 or 100k ISO that maybe cleaner in the 1DX compared to the mkiv. I am happy with the mkiv AF especially coming from the 5d mkii so if it is better than that is a plus. I like some of the specs on paper for the 1dx that the 5d doesn't have, but probably don't need them.
What would you do in this situation?
Off topic I just picked up a 300 is l 2.8 mki, I have a 1.4 extender and I saw some examples with the 2.0 mkiii and they looked really good. Any thoughts on that combination since I know it was optimized for the mkii and not mki for AF speed. I tried searching but wasn't really coming up with much.
Thanks
Richard


