Originally posted by VoiceOfReason As much as I would like to have that thread provide some truly informative posts through a civilized discussion of camera capabilities.... I think it may have gone off the rails somewhere after the second page.
Suffice to say, most folk shooting weddings, street, everything but hardcore fast action sequences on a daily basis, have found the Pentax auto-focus tracking more then capable for this type of work.(I assume this is what is being referred to by the OP as the single point AF.S is undeniably fast and accurate).
I do agree the flash system is slightly under supported when talking about camera mounted P-TTL flashes.
However, with the advent of the Acon R930 wireless triggers (I used them this weekend with good success) for P-TTL, and companies like Cactus, godox, Yongnuo etc... making very nice manual wireless transmitters you are pretty well covered for manual flash work, as well as the use of strobes should you so choose that route.
If on camera P-TTL capable flashes are your thing, you can look a acon (they have an upcoming flash) Sigma, Yongnuo, and Shanny (whoever that is) as well as the Pentax branded flashes.
Further, according to some very credible sources, Pentax is changing its focus to support/satisfy the professional who uses other systems or maybe just getting into full frame photography. What this means for you is a significant current and future developments in the full frame market.
Nikon, and Canon are good bets, but Pentax is becoming a very formidable opponent and shouldn't be discounted. Especially now.