NiSi Cinema 4x5.65'' Pure Clear Filter

The NiSi Cinema 4x5.65'' Pure Clear Filter is a professional-grade optical shield designed to provide essential protection for high-end cinema lenses. This optically clear filter acts as a transparent barrier that prevents dust, scratches, moisture, and debris from damaging your lens's front element. Because it is purely clear, it has no effect on your exposure settings or overall image quality, making it an ideal "always-on" protective layer for rigorous filming environments.

Built to industry standards, this filter is compatible with all leading matte box brands that support the 4x5.65'' format. It features a precise 4mm thickness, ensuring it fits perfectly into standard filter cages or modern cageless matte box designs. For convenience and safety, each filter comes with a premium leatherette pouch for individual transport, while a larger optional filter case is available for cinematographers who need to organize and protect multiple filters within their kit.

Product Features in Detail

Zero-Impact Optical Clarity

The NiSi Pure Clear Filter is engineered from high-definition optical glass to ensure that there is zero shift in color temperature or exposure. Unlike some UV filters that can introduce a slight warm or cool tint, this filter is "pure," meaning it preserves the native look of your cinema primes and zooms without compromise.

Professional Front-Element Shielding

On a busy film set, lenses are exposed to extreme risks ranging from flying debris and sand to salt spray and fingerprints. This filter acts as a sacrificial barrier, taking the brunt of any physical impact or environmental hazard. Replacing a clear filter is a fraction of the cost of repairing or replacing a professional cinema lens front element.

Universal Matte Box Compatibility

Designed to meet the rigorous standards of the film industry, this 4x5.65" filter is compatible with all leading matte boxes, including those from ARRI, Bright Tangerine, and Chrosziel. Whether you are using a swing-away or a clip-on matte box, the precision-cut dimensions ensure a perfect fit without light leaks.

Standardized 4mm Thickness

The filter conforms to the industry-standard 4mm thickness, allowing it to slide effortlessly into standard filter trays or "cageless" matte box designs. This consistency is vital for camera assistants (ACs) who need to swap filters quickly between takes without worrying about fitment issues or mechanical binding.

High-Grade Optical Glass Construction

NiSi uses high-quality glass that undergoes a rigorous polishing process to ensure both sides of the filter are perfectly flat and parallel. This prevents any "wedge effect" or image distortion, ensuring that even when shooting at long focal lengths, your image remains tack-sharp from corner to corner.

Portable Leatherette Protection

Every NiSi Cinema filter includes a premium leatherette pouch lined with soft material to prevent surface scratches during transport. Its slim design takes up minimal space in a camera bag or AC's belt pouch, ensuring the filter remains pristine and ready for immediate use on set.