Originally posted by Michaelina2 If you go the 3rd party adapter route, be warned. Please keep in mind in doing so you are embarking on a grand experiment; that is, you are betting through the use of personal creative cunning and skill, you can make the camera do something it was NOT designed to do. There's a very real possibility that you will NOT like the fuss and hassle associated with using adapted lenses. Should that be the case, just consider the cost (time, effort and money) tuition and just move on. Spare the need to need to obsess endlessly over how you were victimized by... yada...yada...
Agreed, I think to get reasonable results it does take some dedication, as well as time to experiment with lenses that may have not been tested or proven as working well with the Q.
The comparison of IQ results between my Pentax Official adapter and the Fotodiox with Aperture Control one I had until recently are here.
The lenses used for the comparison were the DA*300 and Sigma 70-200 HSM II.
https://www.pentaxforums.com/forums/pentax-q/205119-original-pentax-q-pk-adap...ml#post2184381
Earlier in the thread there is a comparison between the RJ adapter and the Pentax one.
Originally posted by ChopperCharles It's not rated particularly highly, but then there's only one review right now...
Now there are two (I added one.) Note the first review was from someone here who received the wrong adapter, so his comment had nothing to do with the adapter itself since he does not own it.