Originally posted by Dan Rentea But Ricoh does have such a photographer? Where are the Pentax ambassador photographs? I understand that some of the online reviews are biased when comes to Af performance, but I expected from Ricoh to publish some ambassadors photographs...
First, there can be comments on Pentax K1 AF performance from everybody not having used a Pentax K1, but it is very subjective since you rely on review and what you think of Pentax AF for whatever reason. I do have a Pentax K1 with DFA24-70 and DFA150-450, and I wouldn't say that it is 100% good, however, there is no way I can believe the AF test results of DPReview which is way off the actual AF perf. that I observe from my copy of the K1. I've also used a D750. While K1 AF can be more hesitating at times (let's say 5% of the AF runs), 95% of AF runs it's as good as the D750 I've used. In short, I agree that Pentax K1 is not as robust as Nikon D750, but since I own the K1, I have shot 5000 frames from birding to horse racing and I never had any poor results like presented by DPReview. DPReview could still say that Pentax K1 AF is inferior to Canon/Nikon, but saying that they get 85% out of focus in tracking indicates a test problem that can't be generalized to how all K1 copies behave.
If I'd rank DSLR AF performance from best to worse, it would be in this way:
1) Nikon D5/D500
2) Canon 1Dx
3) Nikon D750/810
4) Canon 5DII/7DII
5) Pentax K1/K3
6) Nikon D610/D7200
7) Canon 6D/70D