Best Filter Holder for IRIX Lenses
Finding a filter holder for Irix lenses is notoriously tricky due to their massive 95mm front threads and bulbous glass. I’ve spent years testing ultra-wide optics, and I know the frustration of seeing dark corners ruin a perfect landscape shot. While Irix makes a native solution that solves most problems, third-party options offer unique features like magnetic mounts or integrated polarizers. In this guide, I’ll reveal why the Irix IFH-100-PRO remains the gold standard for these specific lenses.
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Best Filter Holder for IRIX Lenses: Detailed Reviews
Irix IFH-100-PRO View on Amazon View on B&H
The Irix IFH-100-PRO is the definitive choice for anyone shooting with the Irix 15mm f/2.4 Blackstone or Firefly. Because it was designed specifically for these lenses, it solves the “vignetting nightmare” that plagues most 100mm systems. I’ve found that even with two filters stacked, you get a clean image without dark edges. It is incredibly lightweight yet made of aircraft-grade aluminum, making it feel indestructible in the field. The built-in 95mm adapter allows it to screw directly onto the 15mm lens, while optional adapters make it compatible with smaller lenses. The only minor drawback is that it doesn’t include an integrated CPL like the NiSi, but for pure optical clearance on ultra-wide glass, nothing beats it. It’s a specialized tool that respects the wide field of view Irix is famous for, ensuring your filters never intrude on the frame.
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NiSi V7 Holder Kit View on Amazon View on B&H
The NiSi V7 is a masterclass in engineering, offering a “True Color” circular polarizer that sits inside the holder itself. For Irix users, you will need a separate 95mm adapter ring, but once mounted, the performance is stellar. I find the geared rotation for the CPL much easier to use with gloves than the native Irix system. The build quality is premium, and the kit includes a lovely storage case. While it is more expensive upfront, the value comes from including a high-end $80 polarizer in the box. You might notice a tiny bit of vignetting at the absolute corners if you use the 15mm at f/2.4 with three filter slots, but for most landscape work at f/8 or f/11, it is practically perfect. It’s a versatile system that you can use across your entire lens collection, not just your Irix glass.
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Haida M10 Filter Holder View on Amazon View on B&H
If you hate fumbling with square filters in the cold, the Haida M10 is your best friend. It uses a brilliant drop-in system for the polarizer and ND filters, allowing you to swap setups in seconds. For Irix 15mm owners, you’ll need the dedicated M10 95mm adapter ring. I’ve noticed the Haida system is slightly bulkier than the Irix native holder, which can lead to slight vignetting if you aren’t careful with placement. However, the convenience of the “snap-on” design is hard to beat at this price point. The build is solid aluminum with plastic clips that feel surprisingly durable. It’s the perfect middle ground for those who want professional results without the premium NiSi price tag. Just be aware that you’ll need to invest in the specific Haida drop-in filters to get the most out of this system’s speed.
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Lee Filters SW150 Mark II View on Amazon View on B&H
When you move to the Irix 11mm f/4, standard 100mm holders simply won’t work due to the extreme bulbous front element. The Lee SW150 Mark II is the “beast” of the filter world, designed specifically for these ultra-wide scenarios. It uses massive 150mm square filters, which are more expensive and harder to carry, but they provide a completely unobstructed view even at 11mm. I’ve used this on the 11mm and can confirm the light sealing is top-notch, preventing any leaks during long exposures. The holder is built like a tank, though it does add significant bulk to your camera bag. If you are serious about architectural or ultra-wide landscape photography with the 11mm, this is effectively your only high-end option. It is a significant investment, but the glass quality and coverage are unparalleled in the industry.
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Kase K9 Filter Holder View on Amazon View on B&H
The Kase K9 is an elegant alternative to NiSi, featuring a magnetic circular polarizer that snaps into place with satisfying precision. For Irix shooters, the K9 is particularly attractive because it is incredibly slim, which is exactly what you need to avoid vignetting on the 15mm. I find the magnetic system much faster than the threaded CPLs found on other holders. It handles 100mm square filters from any brand, but it works best with Kase’s own Wolverine glass. The holder itself is CNC-machined aluminum and feels very refined. You will need the 95mm adapter for the Irix, and once attached, it’s a very low-profile setup. The only downside is that the magnetic CPL can be bumped if you aren’t careful, though it’s generally very secure. It’s a modern, sleek solution for photographers who want to minimize the weight and complexity of their kit.
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Buying Guide: How to Choose a Filter Holder for Irix
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| Irix IFH-100-PRO | Irix 15mm f/2.4 | ★★★★★ | Check |
| NiSi V7 Holder | Landscape Pros | ★★★★☆ | Check |
| Haida M10 | Speed/Budget | ★★★★☆ | Check |
| Lee SW150 II | Irix 11mm f/4 | ★★★★★ | Check |
| Kase K9 | Magnetic CPL | ★★★★☆ | Check |
Frequently Asked Questions
Will a standard 100mm holder work on the Irix 15mm?
Only if it supports 95mm adapter rings and has a very slim profile. Most generic 100mm holders will cause significant vignetting at the corners because the Irix 15mm has a very wide field of view. It’s always safer to go with the native Irix IFH-100-PRO or a high-end system like NiSi V7 which are specifically tested for wide-angle clearance and offer the necessary 95mm adapter rings for a secure fit.
Can I use filters on the Irix 11mm f/4?
Yes, but you cannot use standard screw-in or 100mm filters. Because of the bulbous front element and built-in lens hood, you must use a 150mm filter system like the Lee SW150 Mark II. This requires a special adapter that clamps onto the lens body. While 150mm filters are larger and more expensive, they are the only way to avoid vignetting on such an extreme ultra-wide lens during your photography sessions.
Does the Irix 15mm have a rear filter slot?
Yes, both the Firefly and Blackstone versions of the Irix 15mm feature a 30x30mm rear gelatin filter slot. This is a great budget-friendly way to use ND filters without buying a large external holder. However, you cannot use graduated NDs or polarizers in the rear slot, which is why most professional landscape photographers still prefer using an external 100mm front-mounted system for more creative control over light.
Are the Irix holders compatible with other filter brands?
Yes, the Irix IFH-100-PRO is designed to hold standard 100mm wide square filters that are 2mm thick. This means you can use high-quality glass from brands like NiSi, Haida, Lee, or Kase within the Irix holder. This versatility is excellent because it allows you to mix and match the best holder design with your favorite specialized filter glass, giving you the best of both worlds for your specific camera kit.
How do I prevent light leaks during long exposures?
Light leaks usually occur between the filter and the holder. High-end holders like the Irix IFH-100-PRO and NiSi V7 feature foam gaskets or light-shielding designs to prevent this. When using ND filters (like a 10-stop), always ensure the filter with the foam gasket is placed in the slot closest to the lens. This creates a tight seal that prevents stray light from entering the sensor during those long several-minute exposures.
Final Verdict
If you own the Irix 15mm f/2.4, the Irix IFH-100-PRO is a no-brainer for its guaranteed lack of vignetting. However, if you want a more comprehensive kit with an integrated polarizer for all your lenses, the NiSi V7 is the professional choice. For those shooting with the extreme 11mm f/4, the Lee SW150 Mark II is your only serious path forward. Choose the system that matches your most-used focal length and your preference for filter-swapping speed.