Yes, I would mount my lens that way if it had a tripod mount, it doesn't.
https://www.pentaxforums.com/userreview ... 0-5-6.html
At the moment I'm using a mount c - Pentax K bajonet adapter, an example with a Pentax 35mm lens (reversed)
https://dev.webonomic.nl/macro-photogra ... d-lens-iii
Using a full frame lens adds a 5.6 factor, so practically it is a ~400-1200mm.
Focusing is hard.
And portability with al the cables attached is an issue. I would love uvc gadget support for raspistill,
for the moment only the webcam functionality works.
Wanting to achieve something like:
Probably the best thing then is to buy another adapter with attached tripod mount, the lens doesn't really support a tripod mount ring, because every part is moving or sliding. Or 3D print an adapter, if I recall correctly some have done that.
The HQ mount does feel sturdy I must say.