http://www.pentax.jp/japan/products/q/ex.html
(in Japanese, English Here (machine-translated))
All the posted sample images are RAW converted in-camera, as indicated and all the four samples were taken at f/2.8 near wide-opened (possibly by one f-stop closed down of the lens for somehow better optical output of the lens but yet NOT to stop down further so as to avoid diffraction, which affects the final resolution).
Do note the underexposure tendency of this production Q nonetheless, I just can't think out why the second girl face photo should require a +EV of 1.3 stops as the exposure compensation factor! >:-o
As for the bokeh we see, I am not sure if it is created with the Fake Bokeh Filter, a built-in software function of the Pentax Q.