I bit the bullet, the 16-50/2.8 is taking too long to show up so I decided to switch priorities for now and got me a DA14/2.8 to cover the hole the DA16-45's sale left in my array of lenses. I'll get the zoom in a couple of months, for now, I'm very satisfied with my new purchase.
This close-focus ability, combined with F/2.8 is what I had been dreaming for, in an ultra-wide, for a very long time. Great for perspective shooting.
Both the sharpness and the blur I get from this lens are great as far as I'm concerned.
Aah, the ultra-wide's traditional role, sweeping landscapes:
More close-focus goodness:
Good for flower stuff even:
One more...
As far as the physical and mechanical qualities of the lens go, it's very well made, full metal body with a joyously accurate focusing ring and true IF design that doesn't change length while focusing, you can also override AF at any time by turning the focus ring, which also does NOT rotate when the lens is in auto-focus. More of this kind of construction, please, Pentax!
Cheers!
-Asad