Recently purchased a ZOOAN (focussing mount for 13.5cm Hektor lens head on PLOOT/Visoflex 1) but it doesn’t focus further than about 1.5 m. Reason is, the combined Visoflex/ZOOAN is about 15 mm longer than the focussing section of the Hektor. I suspect that this is not a ZOOAN, but the equivalent for the Visoflex II & III, on which the mirror box is considerably shorter than that of the 1.
Does anyone have any other ideas? Does anyone have an undoubted ZOOAN to measure? Mine measures 45 mm flange-flange (rear flange slightly recessed) at infinity focus.