Originally posted by Kozlok Smarter than that would be to make the FA and DA limiteds in other mounts and use the profits to fund more lens development. Probably the 10-17 too (the only zoom fisheye!).
This is offered for Nikon and Canon mounts by Tokina. It seems like it is the most popular of the Pentax/Tokina joint venture lenses. The Tokina 12-24mm is also somewhat in demand (I own the ES mount version, as well as two other Tokina/Pentax lenses). The others, not so much.
Canon and Nikon hasn't provided a
comprehensive system of lenses aimed at their crop-sensor mount bodies like Pentax has, and I just don't see much demand for a full solution. Perhaps this is because the two major brands try to pull their customers up to the lucrative FF universe--either in sales or psychology. Or maybe most purchasers simply cannot conceive of any advantages, though the new Canon 40mm pancake should get them thinking about it.
So Pentax offering their lenses would take a major customer attitude change--and the weak Tokina sales results show that it probably ain't gonna work. Which is a shame because the Pentax approach just works better (which is why I purchased three Tokina lenses when I took on a 7D). It would also cost to license the mounts (I believe only Sigma reverse engineers the mount and this has led to retro-compatibility issues in Canon land). Plus the rationale for buying a Pentax body would be that much less (and it's not very compelling right now). Kinda like if Apple licensed OS-X, Mac sales would plop some (I build a Hackintosh this summer and have a clue about this).
M