All the three FA Limited lenses are prone to CA (or PF, or whatever you call it) at wide aperture, and some DA lenses aren't any better in this regard
Some users claimed that the DFA100 macro lens has exactly the same optical design as the FA100 macro, but the FA100 produces much less CA/PF at wide aperture.
Funny thing is, some old manual lenses don't suffer this problem, or at least are not as serious as the later FA/DA lenses. Even my old A15/3.5 has much less CA/PF problem than the new DA14.
I don't know what happened w/ Pentax current lens design, not to say the QC issues even w/DA* or DA Limited lenses
Here is the DA70 lens my friend just passed to me a week ago (sorry about the lousy IQ, I only had an old FA28-80PZ lens w/ me to take these photos before I sent it to our local agent for repair):
The lens just fell apart when the friend was taking photos w/ it (pointing downwards), the front part just came out of the lens w/o any reason
I've heard exactly the same thing happened to a DA21 and DA40 too. These are LIMITED lenses, this just can't be happening!
To be honest, I don't have much confidence w/ the qualities of current DA lenses, including DA* or DA pancake limiteds, although I still have some (including the two DA* zooms). We know all current DA lenses are made or assembled in Vietnam. But think about this, some employees there even take the lens out of the factory and sell them on the second hand market! (please don't ask me how I know, but yes, I know it's true). How do we expect good QC if there are employees like this
Pentax, please bring back the old Takumars (and put AF/SDM in them) ...