NiSi Cinema 4×5.65 Pure Clear Filter

Description

Overview

The NiSi Cinema 4×5.65″ Pure Clear Filter is a professional-grade optical filter designed to protect your lens without altering your image in any way. Optically neutral by design, this filter sits in your matte box to shield the front element from dust, moisture, scratches, and airborne debris while leaving your exposure, color, and image quality completely untouched.

Built for filmmakers, cinematographers, owner-operators, and production teams working with matte box systems, the NiSi 4×5.65″ Pure Clear Filter is a practical on-set essential for anyone who wants reliable lens protection without the compromise of an untested or substandard clear element in the optical path.

Experience & Benefits

On a professional production, protecting your lens is not optional. Whether you are shooting in a dusty exterior location, a humid interior environment, or a fast-moving run-and-gun setup, the NiSi Cinema Pure Clear Filter gives your front element a dependable first line of defense. Because it is optically clear, it introduces no color cast, no exposure shift, and no degradation in sharpness or contrast, so your image remains exactly as your lens renders it.

One of the most practical uses for a pure clear filter is as a placeholder in your matte box when you need the protection of a sealed filter slot but no optical effect. Rather than leaving a slot open to dust ingress or removing the filter tray entirely, the Pure Clear keeps your system closed and your lens protected without affecting what the camera sees.

The filter’s 4×5.65″ format is the industry-standard cinema filter size, making it compatible with all leading matte box systems designed for this format. Whether you are working with a high-end follow focus rig on a cinema camera or a compact matte box on a mirrorless or DSLR setup, this filter drops straight in without modification or adapters.

At 4mm thick, the NiSi Cinema Pure Clear Filter conforms to the standard cinema filter thickness specification. This means it fits correctly and securely in filter cages and cageless matte box designs alike, maintaining consistent alignment with other 4×5.65″ cinema filters in your kit, including ND, IRND, diffusion, and other NiSi Cinema filters you may be combining on set.

Practical Details

The 4×5.65″ format is the most widely used standard in professional cinema filtration, and the NiSi Cinema range is built to integrate cleanly with that ecosystem. The Pure Clear filter works alongside other filters in the NiSi 4×5.65″ lineup, so you can build out a consistent cinema filter kit knowing that every element in your tray is spec-matched for thickness, sizing, and optical quality.

This filter is particularly useful when shooting in variable or unpredictable conditions where you may need to swap effects filters quickly while keeping your lens protected at all times. It also works well as a permanent protective element during interview setups, studio shoots, or any environment where lens damage is a risk but no filtration effect is needed.

A pouch is included with the filter for safe storage and transport between locations. For teams managing larger cinema filter inventories, NiSi also offers a dedicated filter case designed to organize and store multiple 4×5.65″ filters at once, helping production teams stay efficient and keep their glass in good condition across shoots.

Summary

• Provides reliable lens protection without affecting exposure, color, or image quality
• Optically clear design introduces no color cast or sharpness loss
• Acts as a practical matte box placeholder when no filtration effect is needed
• Keeps your filter slot sealed against dust, moisture, and debris on location
• Compatible with all leading matte box systems built for the 4×5.65″ standard
• 4mm thickness conforms to the cinema filter standard for filter cages and cageless designs
• 4×5.65″ industry-standard cinema filter format
• Part of the NiSi Cinema 4×5.65″ filter range, compatible with NiSi cinema ND, IRND, and diffusion filters
• Storage pouch included
• Best for: filmmakers, cinematographers, and production crews using matte box systems
• Best for: on-set lens protection in dusty, humid, or high-movement shooting environments
• Best for: anyone building or expanding a 4×5.65″ cinema filter kit

What’s Included

• NiSi Cinema 4×5.65″ Pure Clear Filter
• Storage pouch

The NiSi Cinema 4×5.65″ Pure Clear Filter is a straightforward, well-made addition to any professional cinema filter kit. It handles the practical job of lens protection without interfering with your image, and its standard sizing ensures it works reliably across matte box systems and alongside the broader NiSi Cinema filter range. If you are building out a 4×5.65″ cinema filter system, this is a useful piece to have on hand. Explore the full NiSi Cinema lineup to find IRND, diffusion, and specialty filters that pair directly with this format. Shipped from the USA with US-based local warranty and support.