38mm clamp (V38) to SM2 male thread adapter for Schneider Macro-Symmar lens M43x0.75 Inner diameter of the adapter

Inner diameter of the adapter is 52mm with female M50x0

this adapter will require using less number of macro rings

Front side - M48x0

so all your mounted objectives will have same 45mm parfocal height

38mm clamp (V38) to SM2 male thread adapter for Schneider Macro-Symmar lens M43x0.75 Inner diameter of the adapterFront side 38mm inner diameter (accepts Schneider male V38 mount) Rear side SM2 male thread (2. 035" 40tpi) Made of high quality aluminium alloy. This adapter allows using lenses with so called V38 mount (like Schneider Macro Symmar) on Thorlabs tubes with SM2 thread. Flangeless design allows putting a lens deep inside a tube.