Originally posted by eddie1960 Fixed Focal length not fixed Focus. Just fancy words for prime lens a term many P&S users may not know where they can decipher Fixed Focal Length
It wasn't that source that I was thinking of, I can't seem to find it now but it was a Chinese forum in English so there could have been a language issue in the translation. Anyway, the new pictures appear to clearly show two sets of ridges with the inner having the alignment line and the outer having a continuous set of ridges consistent with a focusing grip.
On the compatibility side - you seem to be right - and that link isn't working BTW. What I found on the Pentax USA site says:
"PENTAX KAF mount is compatible with current and past K-mount compatible cameras."
There does appear to be some serious confusion on this as other sites are saying that it will not work. I take it that an official Pentax site is more likely to be right on this - even if it is Pentax USA.