NiSi Filter Holder 180 for Irix 11mm/4

NiSi Filter Holder 180 for Irix 11mm/4 – Compatible with 180mm Square Filters for the IRIX 11mm F/4 Super Wide-Angle Lens

This NiSi 180mm filter holder is specially designed for use with the super wide-angle IRIX 11mm F/4 lens and 180mm square filters. It lets you mount square or rectangular filters in front of the lens and adjust their position to match your composition. The holder combines durable materials and precise machining to reduce stray light and to provide reliable field use.

Design and materials

NiSi constructs this 180mm filter holder from aviation-grade aluminum. The single element is CNC machined for precision and finished with a matte black frosted surface. In addition, the screw accessories are made of copper and plated with black nickel. Together, these choices increase durability and help limit unwanted reflections that could affect the image.

Why use square and rectangular filters

Square and rectangular filters solve problems that round screw-on filters cannot. First, one square or rectangular filter can serve multiple lenses when you use the appropriate adapter rings. This means fewer filters to carry when you work with different lens sizes. Second, rectangular filters can be shifted up and down in the holder, allowing you to blend transitions—such as a bright sky and a shaded foreground—into the scene where needed.

In addition, graduated rectangular filters come with different transition types. Soft-edge graduations work well with very wide-angle lenses, while hard-edge graduations better suit normal and longer focal lengths. This holder supports those use cases by accommodating the filter movement required for blending transitions.

Compatibility and usage notes

This holder is designed specifically for the IRIX 11mm F/4 super wide-angle lens and is compatible with 180mm square filters of 2mm thickness. It accepts up to two filters at the same time. You can also rotate the assembly 360 degrees to adjust orientation, but note that slight vignetting can occur when the holder is rotated at a 45-degree angle.

Key features

• Designed for use on super wide angle lenses, specifically the IRIX 11mm F/4
• High quality aviation aluminum
• Precise CNC machining
• Black frosted surface
• Anti-reflective design
• Copper screw plated with black nickel
• Quick installation
• Withstand extreme temperature
• Compatible with 180mm square filters (2mm Thickness)
• Allow up to 2 filters to be used together
• 360 degree rotating
• Slight vignetting when you use it rotated in 45 degrees

Practical benefits for filmmakers and photographers

Because the holder is built for the IRIX 11mm F/4, it helps you control exposure differences across very wide scenes—useful for landscape and architectural work. The robust materials and anti-reflective finish improve image reliability in varied conditions, and the quick installation saves time on set. Finally, the ability to stack two filters and rotate the holder increases creative flexibility while shooting.

FAQ

Question: Is this holder compatible with the IRIX 11mm F/4?

Answer: Yes. The NiSi Filter Holder 180 is specifically designed for use with the IRIX 11mm F/4 super wide-angle lens.

Question: What filter sizes and thicknesses does the holder accept?

Answer: It is compatible with 180mm square filters with a 2mm thickness and can hold up to two filters at the same time.

Question: Will the holder cause vignetting or other optical issues?

Answer: The holder allows 360-degree rotation, but you may experience slight vignetting when it is rotated at a 45-degree angle. This is a normal behavior to be aware of when composing at extreme rotations.

Question: How does the construction affect image quality and durability?

Answer: The aviation-grade aluminum body is CNC machined and finished with a black frosted surface to reduce stray light. Copper screws plated with black nickel enhance durability and help maintain an anti-reflective design, contributing to reliable performance in various shooting conditions.