- Front side - M52x0.75 female thread
- Rear side - 2.035″ - 40tpi male thread (Thorlabs SM2)
- Male thread length - 50mm
- Material - anodized aluminium alloy
Useful item for macrophotography. Stop ring allows precise adjusting and securing its position.
Sample pictures show this adapter is a full setup. Schneider-Kreuznach Componon 180mm f/5.6 used as tube lens for Nikon Plan Apo infinity microscope objective.