Originally posted by ffking the lens has a tendency to set off in the wrong direction, and then go all the way before coming back,
Please mention the lens you are considering with this statement. With SDM lenses, the AF do a full cycle when the AF position is between the closest focus distance and the subject. That is no the case anymore with DFA lenses. Furthermore, as soon as the defocus is so much that the PDAF sensor can measure a phase shift beyong 180 degree, there is no way the camera can know where the subject is, and this is the case of ALL phase detect AF systems, Canon, Nikon, whatever.
I've seem the "bad Pentax AF" topic coming back on the table over and over again, although Pentax AF improved an order of magnitude over the last 5 years. I shooting BiF tracking all the time with Pentax AF , and I find it disgusting that folks barely using less than half of the capabilities of the Pentax AF , criticizing it.
---------- Post added 06-10-16 at 19:24 ----------
Originally posted by FantasticMrFox I don't know about you, but if I got a D500 with an appropriate lens I wouldn't "fail", rather I would be able to take significantly better action shots than I can now with my K3.
Why not compare a F1 race car and conclude the car you own is crap.
If I take a 1Dx II, or a D5, AF module size does not fit into a K3 or K1, but performance beats the Pentax. It's always the same , you get a Pentax because it is the best bang for the bucks and then you say: hummm the AF isn't as good.
---------- Post added 06-10-16 at 19:28 ----------
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I mean, if I'd ever switch to Nikon or Canon, it wouldn't be because of Pentax gear, it would be because I'm disgusted by Pentax community of amateurs bring down photography to camera performance. When I shoot along with pros using Canon and Nikon, getting the same results by applying the same techniques as Canon and Nikon users, I just feel like I have nothing to do in Pentax land.