Tokina 4x4 Pro IRND 2.1

The Tokina PRO IRND 2.1 4x4 filter is a professional infrared and neutral density filter designed for high-quality cinema cameras. This filter addresses the issue of infrared pollution that occurs when using strong ND filters with sensitive digital cinema cameras that lack built-in IR cut filters. Unlike many IRND filters that cause color shifts, the Tokina PRO IRND maintains true color fidelity without the need for constant white balance adjustments during shooting or complicated color corrections in post-production. The filter features Tokina's innovative Accu-ND technology, which precisely controls light transmission while maintaining neutral color reproduction across the entire visible spectrum. Available in a 4x4 inch (101x101 mm) square format, this filter construction showcases an ND coating embedded between two layers of glass, allowing for repeated polishing in case of scratches to extend the filter's lifespan. The PRO IRND 2.1 employs infrared suppression technology instead of complete cutoff, effectively controlling infrared wavelengths up to 1200 nm without the color shifts typical of cutoff IRND filters. This makes it particularly suitable for cinematographers working with highly sensitive cameras who require consistent color performance and reliable infrared pollution control. The filter construction ensures stable transmission characteristics and preserves optical quality for professional film production applications where color accuracy and reliability are essential.