It's a nice focal length but the retail price is a little steep - $600 from what I've seen (though street price should be a bit lower soon after release)... and apparently this one is a break from previous SDM-focusing lenses... and
will only autofocus on bodies that support SDM focusing. Read: K10D, K100D Super, K200D, K200D Super.
It will still work on older cameras, but not autofocus. I guess it's kind of the opposite problem at the Nikon D40/D60s.
I think the lens is probably an update to the 16-45mm F4 lens that's available now (and well-loved as a reasonably fast and affordable kit lens replacement.)
Gdad: DA = a designed-for-digital lens - usually meaning designed for an APS sensor, though some are older film designs with updated tweaks, so they'd work fine on a FF body. The * (actually a star, not an asterisk) means that it's a high-end lens, and it
may mean weathersealing. Currently, there are only two DA* lenses available (the 16-50mm F2.8 that I want, and the 50-135mm F2.8 that I have), and both are weathersealed. There are some other ones in the pipeline. So far, they have also been all zooms. High-end primes (like my 31mm F1.8) are Limiteds, and while my 50-135mm is built very nicely, the 31mm F1.8 is a whole order of magnitude different - more like a Leica lens or some other exotic. To further confuse the matter, there are six Limited primes - the older three are "film" lenses, the newer three are "digital" lenses
and pancakes. Each has one wide, one medium, and one telephoto.
These camera manufacturers just love their alphabet soup arcana.
