Vixen 37303 T Ring Adapter for Sony Alpha Digital SLR
A high quality T-Ring vital to ensure the film plane is square to the optical axis. These T-rinsg accomplish that while minimizing any flexure as all components are crafted to Vixen's High Standards. To be used for Astrophotography in conjunction with other prime focus or eyepiece projection adapters. EachT-Ring is designed for eyepiece projection or Prime Focus Photography.