Opteka T-Mount Lens Adapter for Sony E-Mount NEX-3, NEX-C3, NEX-F3, NEX-5, NEX-5N, NEX-5R, NEX-6 & NEX-7, NEX-VG10, NEX-VG20 DSLR Cameras
An accessory ring which converts the lens mount of your SLR camera to a T-Mount. The compatible Opteka T-Mount System makes it possible to use most any single lens reflex camera in combination with various front camera attachments such as telescopes, mirror lenses, slide duplicators...etc. The T-Mount is a metal connector that screws onto the compatible front attachment and allows this combination to be coupled to your SLR camera lens mount.