9 out of 10 points and recommended16mm wide angle, Constant F/4, Nice Bokeh, minimal Distortion, Good Flare control.Slow AF in low lighting. Noisy Auto focus. awkward extended rotation to achieve wider angle.
This truly a great piece of lens, consider getting this lens with the K10D body instead of the kit lens. You get much wider angle at 16mm and constant F/4. I tried several close up shots even though this lens wasn't meant for close ups it still produce great sharp quality image and nice bokeh. Sharpness and color reproduction are great.reviewed January 21st, 2007 (purchased for $355)
Contruction feel is good and doesn't feel really cheap. Great control over flare, minimal distortion even at 16mm, corner darkness isn't a problem. Can use circular polarizers and petal hoods.
Sad points about this lens that it focus slowly in low light and take quite a while to focus. Auto Focus quite noisy and the way the lens is extended to get 16mm instead of the usual way around. Those are the only cons about this lens. This lens is highly recommendable and should be bought without any doubts! A No Brainer considering the price for this lens which produces much better image quality and sharpness. It's a steal.