Hi Henry (i´m in for a possible derail, sry then!!

)
Indeed, nice details/sharpness in here!
Can you tell us/me how long the final render needed?
I ask because i red/seen some time ago something interesting about a possible render time sink with even good results for pictures:
Maximized up to "doubled" resolutions with lower settings (D 0.6, AA 4 Full, PNT 0.02-0.05 max. maybe in your case Henry) with post sharpened and reduced image size to final size
vs.
Aimed final size render with very time consumptive high settingsOf course, all will be depending on the scene/complexity itself i guess.
Could be an interesting challange, which i cant test yet because of my own spare knowlege of complex scenes of TG and software restrictions atm.
Does you, Henry, or anyone else have collected some experiences with that or is a thread out there facing that theme, i did not found till yet?