Sony A6100 lens mount_NIkon S and all the speeds are

and all the speeds are accurate

5") and extends to 135cm (53") without the elevator centre column (165cm or 65" with the column up)

NOTE: this is not for the manual-focus C/Y mount

and diaphragm works well

Sony A6100 lens mount_NIkon S and all the speeds areThe Sony A6100 is a compact interchangeable lens mirrorless camera with a 24mp CMOS sensor, tilting screen and video recording up to 4K. With approximately 300 actuations. Lightweight and easy to use, this is a great little setup for anyone who wants big camera capability in a small package. In excellent condition, with minor cosmetic wear; includes battery and USB charging cable.