Originally posted by kodai84 After reading thru this interesting thread, I can't help but wonder if what's really happening (broken solonoid or not) is that the camera still captures with same aperture, but the OP is using ExComp. to +x to compensate for the reduced light of the lower aperture, the camera's actually compensating via slower shutter or higher ISO - producing the desired exposure? If this is indeed the case, the DOF will still be that of a wide-open aperture (if solonoid is working and camera is working as specified - by Pentax).
With a working solenoid yes but not if the solenoid is stuck. That's the whole point @M42man made.
Here we had another discussion:
Suddenly all pics are very dark? - Page 2 - PentaxForums.com
One member denied it would work although he had the best chance to test it with his ABF-K30 but he chose not to comment anymore even being wrong.
So I had to wait until I had a K-S1 with ABF and did the tests.