Where can I buy the TOKINA EXPANDER S35 - 8K series

TOKINA EXPANDER S35 - 8K

SPHERICAL
EXPANDERS
TOKINA
Tokina created the 1.6x Expander so that cinematographers can use their favorite Super35 PL lenses on the latest full-frame 6K/8K cameras. The Expander increases the diameter of image circle by 1.6x on Super35 PL prime and zoom lenses. This allows for a g