Polar Pro Quartzline 67mm ND100K Filter

QuartzLine filters are made of 99.9% pure fused-quartz glass for unrivaled durability and optical clarity. These single lens element filters produce a very low refractive index of just 1.46 and offer outstanding temperature stability. Combined with an over-engineered brass frame, QuartzLine filters thread on smoothly and are built to withstand your most rugged adventures.

Fused Quartz Glass

With low surface reflectivity, stability in extreme tempratures, & a refractive index of just 1.456.

Brass Frame Construction

Featuring a hand-crafted 4 part frame with smoother threading than aluminium.

Top Features

• Fused Quartz Glass Element - Resolves up to 400MP sensors
• Brass Frame - Smooth threading and increased durability
• Perfect Color Neutrality - New coating process for zero color shift
• 16 Coating Layers - Anti-scratch / anti-oil / hydrophobic coatings
• Lifetime Warranty - Built for a lifetime of adventures