Integrated standard rear load distance of inner matte paint - M48 rpm, suitable for NEX camera interfaces A7, a7S, A7

SONYNEX M48 camera mount M42 to S0NY mirrorless interface full frame E port
Thickness 37MM, suitable for direct flat field connection to SONY, A7, A7S, A7R, Ar7II series cameras
The typical flat field loading distance is 55MM, such as AT1X, Ruixing 0.76, and Ruixing 2.5-inch flat field mirrors.