with helicoid, this photo shows infinity position for Minolta lenses
about quarter turn from the shortest position, extends 9mm more
with this adapter, MC-PF 100mmF2 (MFD=1.2m) can focus to 0.72m

SR->4/3 adapter was glued to 42->62mm step up ring, that's all,
the bottom is 13.5-23mm helicoid together with µ4/3->E adapter.