"The K-01's contrast detect autofocus (CDAF) performs very well; it is more than adequate for its target audience. However, it is noticeably slower and less sensitive than the Pentax SAFOX IX phase-detect TTL AF system (PDAF) found in current DSLRs. It is slightly faster and more accurate than the DSLR live view contrast-detect AF system overall (much faster in bright light, but not much better at close range or in low light) and consistently seems to use a different (improved) algorithm to lock focus."
Well, this time it seems that this PF review is balancing and fair enough, against what it could be overall too positive in the past and many of the shortcomings of those Pentax gear are not pointed out clearly and intentionally toned down. Maybe it's time for me to refer to their reviews more often, or even for me to re-post again at the PF (if I have the time!)! ;-D
K-01 1st look by Steve Huff (Video Review)