The Tokina Cinema Expander PL to EF (Model KCT-2151D) is a 1.6x optical adapter designed to enable the use of Super35 PL lenses on full-frame cameras. This precision-crafted tool increases the image circle diameter by 1.6 times, allowing Super35 PL prime and zoom lenses to cover the larger sensors in 6K and 8K cinema cameras. The expander features a sophisticated 7-element optical design that maintains the original lens performance characteristics while limiting light loss to about 1.36 stops. Constructed with a fully mechanical design, this adapter offers robust durability while remaining lightweight for practical field use. It is specifically optimized for lenses with apertures of T2.0 or larger and delivers optimal performance when lenses are stopped down to T2.8 or smaller. The adapter effectively converts Sony E-mount camera mounts to PL lens mounts, thereby expanding lens compatibility options for filmmakers. With carefully designed dimensions for compact integration into camera setups, this expander preserves mechanical precision throughout its construction. The black anodized finish provides corrosion resistance and a professional appearance. This tool represents a practical solution for cinematographers looking to utilize their existing PL lens inventory on modern full-frame camera systems without compromising optical quality or mechanical reliability.