>>2943331Only the K-version of the Pentax 28mm actually uses the Zeiss Distagon design.
The M and A versions are different, lacking that "floating element" that made the Zeiss version special. They're still good, and about half the price of the K version - which is essentially a collectors item these days (and priced pretty much the same as the real ZK Zeiss lens) - but not quite the same. The K-version is pretty hard to come across, the M and A versions pop up every now and then. I think I paid about threefiddy for mine.
