Yes. It is because the aperture lever in the camera opens up K-mount lenses. The aperture lever is controlled by a motor and making K-mount lenses work it needs Frankenstein type of engineering making the camera recognising that it was not an A, F, FA or FA-J lens, not a screw mount lens either, and then start the aperture lever motor while metering . It would be expensive and battery hungry solution only to please less than 1000 people world-wide.
What it needs is that advanced device called a "diaphragm simulator coupling" that you can find on the MZ-M flagship.
The unfortunate fact is that too many Pentax buyers are too cheap
The unfortunate fact is that Pentax was too cheap to include one.
cheers, caveman
