Originally posted by Class A Their comment could mean that the AF speed isn't where it should be, or it could be a last straw they are clinging to in order to give the nod to the Nikon D7100 over the K-3.
I've given up on DPReview as a reliable source of information after they failed to address the many obvious questions regarding their K-5 II vs D7000 scores. They scored the Nikon D7000 with better build quality than the Pentax K-5 II and much higher performance (despite its miniature buffer size compared to the K-5 II).
You may want to look at the inexplicable scores for the
Nikon D7000 and the
Pentax K-5 II yourself.
There was quite a discussion back then with DPReview staff involved, with the staff picking up on spelling mistakes and other small errors, correcting them in the review, but not properly responding to the fundamental questions about the inexplicable scoring. Based on my suggestion, DPReview at least added "built-in sensor shift shake reduction feature" as a "pro" in their summary list of the K-5 II review (imaging that not being there in the first place!) but ignored many other important questions and never explained their odd -- to say the least -- scoring.
If Imaging-Resource mentioned a lack of AF speed, I'd be listening. With DPReview it could be anything from dilettantism to unashamed brand favouritism.
I saw another funny example of this recently when the Olympus OMD EM-1 came out. They said something to the effect of "users of 4/3 glass on the E-5 will be disappointed with the AF performance of these lenses on the EM-1." They were soon cowed into admitting that this was not based on side by side testing, it was actually on the reviewer's recollection of shooting with an E-5.
There might be some institutional bias toward the big two at Dpreview, but I think more often than not with them their review mistakes are just laziness, or as you said dilettantism, which of course would just let that bias slip in even easier where it exists. Those random passive aggressive remarks do seem to be a trademark of some of their work: "Well it sure would have been a nice camera if..."
With all this said, I wouldn't be that surprised if the AF on the K-3 isn't much faster than its K-5 brethren. Probably a bit snappier and more responsive, but not a ton faster. There are physical limitations of the SDM motors for example, and I imagine if they were using a review body Dpreview was talking about the DC motor in the 18-135.
I have photographed sports (in terrible lighting conditions) with all of the Pentax bodies from the K20D through the K-5 (including the K-30, not including the K-50). Things have gotten much better since the K20D days, but the focus tracking based on color with the additional focus points will likely be the biggest boon for sports shooters, along with the big buffer for continuous spray and pray shooting. The camera getting confused and choosing the guy in the wrong jersey in a crowd has resulted in a lot of the missed shots I have had previously. It looks like they already grouped the AF points with this in mind, but I hope there are some options for grouping AF points like in the K-30.
I'm also excited to see if the multi-pattern AWB can help with the atrocious color balance issues you can get with high school sports lighting. I swear it sometimes looks like the players are playing in several different dimly lit gyms after I get home and look at the photos