Vello T-Mount Lens to Canon EF/EF-S-Mount Camera Lens LA-CEF-T
Nisha T Mount Adapter for M42 TMTS B&H Photo Video
Amazon.com: Alstar T/T2 Lens Mount Adapter Ring and M42 to 1.25" Telescope Adapter (T-Mount) for Sony-NEX Camera - Precision machined T2 Adaptor Ring for All Sony NEX Compact System Cameras : Electronics