You clearly have a very extensive knowledge. Given your extensive knowledge of lenses and fittings what did you think was the gap in your knowledge that others might have been able to cover? I would have been surprised if anyone had been able to add to what we now know to be your extensive knowledge.

Of course a discussion about others' experience of non Pentax lenses on Pentax cameras might be a worthwhile thread but this wasn't the impression I had. It seemed you had a problem with the bokeh of F2.8 in one Pentax lens and needed help as a newcomer to the P645N.

Clearly not the case. In fact if we need help we can come to you.

I hope there is a lens out there that will meet your requirements but don't hold your breath as they say