K&F Concept 77mm 2-Piece Filter Kit — Nano-X Circular Polariser (CPL) + MC UV, 28-Layer Green Nano Coating, Top & Bottom Metal Lens Caps

Compact 2-in-1 filter set from K&F Concept that pairs a Nano-X polarising filter (CPL filter) with an MC UV filter. The kit also includes two metal lens caps (top and bottom) crafted from aviation-grade aluminium alloy and a padded storage bag for transport and protection. Optical and coating details: both filters are made from optical glass and feature 28 layers of green anti-reflective nano-coating. The surfaces are HD, waterproof, scratch-resistant and oil-resistant for reliable performance in the field. Overall light transmission reaches up to 99.6%. Mechanical design: the filter frames have CNC precision engraving with non-slip teeth to allow precise CPL rotation and adjustment. The CPL frame thickness is 5 mm/0.2 inch and the UV frame thickness is 3 mm/0.13 inch. Their ultra-thin frame construction reduces the risk of vignetting (dark corners) when used on wide-angle lenses. What each filter does: the CPL removes non-glass reflections (including from water), enhances color saturation and helps render deeper blue skies and distinct cloud layers without degrading sharpness in telephoto shots, preserving high-resolution detail. The MC UV filter provides physical protection for your lens while absorbing ultraviolet light; its multi-layer coating lets light pass through without changing direction and without compromising image sharpness in telephoto images.