Manufacturer of this lens needed it to be cut in half so they can use it as a demo presentation of what’s inside. We used water jet to cut camera lens apart. Waterjet was used mainly because it is tolerant to different materials it’s almost same as to use a saw to cut lens. If we would use laser to cut aluminum housing but inner glass components would be untouched while waterjet cuts everything straight through.
You can view video of lens cutting here: https://www.youtube.com/watch?v=weWVFb_c2zk
