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OP here, I ended up digging out a Pentacon 2.8/135 and some macro rings. I am pretty satisfied with the results!
This picture is pretty meaningless for most, but the red key is about 19mm for reference.
Shot with my X-S10, a FX to M42, a 11mm, 16mm and 45mm (I assumed those were the sizes of the rings) macro rings and the Pentacon 2.8/135mm aforementioned