When Pentax (Ricoh) introduced their full frame digital camera they reintroduced a new line up of FA zooms, a few primes remain on the market at well, used Pentax prime lens can be quite expensive. The Pentax 50mm limited edition lens is quite sharp, likely one of the sharpest primes ever made. I dont have any power zooms, but my Pentax kits are very good lens at not much cost. Also I belive that the Z1 will work with manual focus K lens and with an adapter M42 screw mounts, but you need to be careful as some Pentax film cameras will work with KA and later lens.
llluded introuehz