The lens has a T2 thread on the camera side with a working distance of 55 mm. However, many photographers prefer an M48 adapter. This adapter replaces the original T2 adapter and allows the connection of accessories with the M48 thread.
- Connection telescope side: T2 (M42x0.75) internal thread
- Connection camera side: M48x0.75 external thread
- Working distance from the M48 thread: 55mm