Sigma's new 18-200mm F3.5-6.3 OS HSM II lens has just been made available in the Pentax mount! It's arrived at retailers together with a very welcome $100 instant rebate, reducing its final price to just $399. With the new high prices for Pentax brand lenses, this seems like a particularly good deal!
This 18-200mm is an all-around super zoom lens, and the new "mark 2" version features improved optics compared to the old 18-200mm, as well as Sigma's HSM system for fast, quiet, and (unlike Pentax SDM) reliable autofocus. The Pentax version of the lens does not have in-lens OS (optical stabilization), as it is rendered redundant by in-body SR.
The new lens has already been added to our lens database, where you can post your own review of the lens sound you decide to get it.