Yes, Astrotracer does work on the K3iii - although the controls are very different. Does anyone know what the difference is between Astrotracer mode 1 and 2? From the description, type 2 is for landscape with stars, while type 1 is for stars only.
You have to press the green button to be able to use the front wheel to adjust the exposure time - otherwise you need to use a remote release. The rear wheel adjusts the aperture. The exposure compensation button triggers the fine calibration.
K3iii with HDDA 16-85 WR at 16mm, 1600 ISO, f4.0 and 120s.
The Southern Sky by
RobGeraghty, on Flickr