The Tokina 1.6x Expander converts Super 35 lenses to cover Vista Vision and full frame sensors. This allows you to utilise many more lens options on larger sensors especially Super 35 zooms that may not have a similar equivalent for full frame such as the Cooke 18-100mm Zoom.
The light loss is 1.3 stops, and it increases your focal length by 1.6x and the adapter is for PL to PL mount. Note due to the size of the back element some Super 35 lenses will not work with the adapter.
