Autofocus Upgrade question

[Observable]

I have decided that I want to upgrade to a full frame from my 40D. Of course my 1st choice would be a 5D3 but I think that the price is a little out of my reach. The 5D2 looks like a better option to me over the 6D but I still have one nagging question. I have read a lot about the 5D2 autofocus system leaving much to be desired but I am more or less happy with the system on my 40D. I don't love it but it get the job done most of the time. I mainly just shoot landscapes but I like to shoot pets and sports just for fun every now and then. None of witch I do professionally, just an enthusiast.

So my question is, how does the 5D2 AF compare to the 40D? Would this be a downgrade or still an upgrade? Thanks is advance for your help.

 

[Loswr]

The center point of the 5DII will focus better than the 40D's center point in very dim light. In most other ways, it's a downgrade. But for landscapes mostly, the 5DII AF is great. With moving subjects, your keeper rate will drop - learn to shoot bursts. But...the images that are in focus will be much better than the 40D - a worthwhile trade, IMO.