Originally posted by ElJamoquio There's about 35 lenses right now, plus whatever DA lenses and roadmap lenses you want to call FF. Current K-mount Full-Frame Lenses
Sorry but the link is just plain inaccurate. Might I again refer everyone to the B&H site, but it's also not just them - there are a number of companies selling cameras that are also able to come up with their version of about 50-60 cirrently marketed Pentax PK full frame lens'.
...And yes as Eddie1960 stated, Sigma would not have much work in getting out their fair share of new full frame lens' - in addition to the ones they already offer in PK.