Originally posted by Mountain Vision the FA 35 is actually a ~2001 release, I think. I originally had it and the FA 50 with my K10D back when the K10D was released. But the FA 35 was discontinued and then unofficially just put back into production sometime in the last decade. It's a lens with a complicated history.
My point is, the D FA100 WR is a lens with long history. It's based on an older lens that's based on an
even older lens, based on a
considerably older lens (going back considerably further than 2001, mind you). Even when the current version was released back in 2009, it was more expensive than the new HD FA35mm f/2 is today after inflation, and current pricing is aimed squarely at maintaining reasonable sales of an older (even if very good) model.
The HD DA35mm f/2 may also be based on an older lens, but it's a brand new update. So the release price is surprisingly good, and I expect it will drop in the next year or two...