Originally posted by clackers But more importantly, you can be called a typically gloomy Pentax shooter, Mee ... :P ... did *you* know how flawed the Nikon system is?
Nikon do not recommend you use it for sports, according to the article!
Perhaps so! But do you really think we should get into name calling on this otherwise friendly forum? I don't think so..
Of course I know the Nikon AF system isn't perfect. I think we disagree on the 'how flawed' portion of your statement though.
There are a lot of systems (not just cameras) where the manufacturer conservatively rates and recommends use when, in reality, the system is capable of exceeding those values. They simply don't want complaints (and more importantly, lawsuits). As the article you posted shows, the tracking system in the D5 is quite capable of performing very well under 'normal' conditions, and admirably under duress... even though there are obvious bounds to accuracy.
Canon owners complain about their system, not knowing what they have. Nikon owners complain about their system, not knowing what they have. If they had the Pentax system, they'd complain too. There's complaints all around for each system, because (in reality) none of them are infallible. As I said before, one must look at each system as they are for what they are and determine if what is offered (not estimated or anticipated in some point in the future) makes the most sense for them. A personal choice.
That said, this thread and the OP aren't convincing for what they are attempting to convince us of.. it is the wrong type of data to conclude what is attempted to be concluded and even if it wasn't, there isn't enough information to understand how they came to those values anyways.
Then we broke off that discussion to an entirely different discussion on AF tracking. Whole new can of worms than initial lock on speed.
I don't think we'll see a definitive answer (one way or the other) on this topic unless someone figures out a way to compare cameras in the same manner with the same targets and tests. Otherwise there are too many extraneous factors that muddy the waters.