Useful small light sealed lens.
Sharp images at 18mm even wide open. Somewhat weaker on 55mm end. with F8 it produces very good images. Contrast is nice. AF speed is fine. Weather seals can withstand heavy rain. Build quality is quite good for a cheap kit-lens, but could be even better - tighter tolerances.
If pentax imaging decide to build 18-55 markIII after some years, please use 7 rounded aperture blades and add screw type mount-cap.