Breakthrough Filters ND6 150mm Square Neutral Density Filter - Sharp

In this review the Breakthrough Filters ND6 150mm square neutral density filter is evaluated for landscape and long exposure photographers who demand colour neutrality and edge-to-edge sharpness. The single biggest reason to consider this filter is its claim of industry-leading optical quality: tempered glass construction with 16 MRC layers and Nanotec coatings promising durable protection and minimal colour cast. The review focuses on real-world handling, build, and image quality to help buyers decide whether this ND is worth adding to a square filter workflow.

Key Features

• Tempered square glass: Provides a more impact resistant surface than untreated glass for greater durability in the field.
• 16 MRC layers: Create a protective, hard surface that resists scratches while preserving image sharpness across the frame.
• Nanotec coatings: Repel dirt and moisture to keep the filter cleaner longer and simplify maintenance after shoots in adverse conditions.
• Colour-neutral performance: Minimises colour cast so blacks, whites and B&W conversions stay faithful to the original exposure.
• Foam light sealing gaskets: Reduce stray light leaks when used with compatible square holders for cleaner long exposures.
• Individual colour coded case: Lets photographers quickly identify density strength and protect the filter in transport.

Who It's For

The Breakthrough ND6 is aimed at landscape, architecture and long exposure photographers who use 150mm square systems and want minimal colour shift and excellent sharpness for daytime long exposures. It suits shooters who expect a robust, repeatable result and who appreciate a protective tempered construction and easy handling in the field.

Photographers who primarily use screw-on circular filters, need variable ND solutions, or require an ultra-low cost disposable option should look elsewhere. This product is practical for owners of compatible square holders who prioritise image quality and durability over the lowest price.

Pros & Cons

Pros

• Outstanding glass quality and sharpness as reported by users, yielding great results for B&W and colour images.
• Build quality feels robust with a solid frame and foam gaskets that reduce light leaks during long exposures.
• Coatings and tempered glass make the filter easier to clean and more resistant to damage in normal use.

Cons

• Higher-end construction adds cost compared with basic filters, which may not suit budget buyers.
• Requires a compatible 150mm square holder system, so not useful for photographers without that setup.

Specifications

Our Verdict

The Breakthrough ND6 150mm filter is a strong choice for photographers who need reliable, colour-neutral long exposure performance and a rugged, easy-to-clean filter. Its tempered construction and multilayer coatings justify the price for users who demand consistent sharpness and fewer colour shifts, making it good value for square system shooters who prioritise image quality over savings.

Frequently Asked Questions

Will this fit my 150mm square holder?
Yes, it is designed for 150mm square filter holder systems; confirm your holder supports 150mm plates.

Does it cause colour casts?
Customers report very minimal colour cast and excellent neutrality, making it suitable for accurate colour and B&W work.

How durable are the coatings?
The 16 MRC layers and Nanotec coatings create a hard protective surface that repels dirt and moisture and improves scratch resistance in normal use.