NiSi S6 150mm Filter Holder Frame

The NiSi S6 150mm Filter Holder Frame is a premium square filter holder designed for landscape photographers using ultra-wide-angle lenses. Constructed from aviation-grade aluminium processed using CNC technology, this robust holder features two filter slots that accommodate 150mm-wide filters measuring 2mm thick (150x150mm or 150x170mm sizes). The innovative dual-slot design allows you to use two rectangular filters simultaneously, plus an integrated rotating circular polariser. Each filter slot grips along the filter's edges only, protecting front and rear surfaces from contact, making it ideal for graduated neutral density filters that benefit from variable positioning. The holder features a new locking wheel system that securely locks into position when used with an S6 adapter ring, whilst allowing smooth 360-degree rotation for precise filter adjustments.

• Holds two 150mm-wide, 2mm-thick square or rectangular filters (150x150mm or 150x170mm)
• Aviation-grade aluminium construction with CNC machining for durability and precision
• 360-degree rotation capability for creative filter positioning and graduated filter adjustment
• Edge-grip design protects filter surfaces from contact damage
• Integrated locking wheel system for secure positioning (requires separate S6 adapter ring)