Hoya HD MkII CIR-PL 52mm Circular Polarizer Filter

The Hoya HD MkII CIR-PL 52mm is a premium circular polarizer filter designed for photographers and videographers who demand superior image quality and durability. Part of Hoya's renowned HD MkII series, this filter features chemically hardened optical glass that is 4x stronger than conventional glass, ensuring long-lasting performance in demanding conditions. The 16-layer multi-coating (8 per side) provides anti-reflection, water-repellent, oil-repellent, scratch-resistant, and anti-static properties, making it easy to clean and maintain. With a slim, lightweight aluminum frame, the filter minimizes vignetting even on wide-angle lenses. It effectively reduces reflections from non-metallic surfaces, enhances color saturation and contrast, and darkens blue skies for dramatic landscape shots. The filter factor ranges from 2.5x to 5x (approximately +1.3 to 2.3 stops), allowing for creative control over exposure. Front filter threads enable stacking with other filters. Ideal for outdoor, travel, and nature photography, this filter is a must-have for any serious photographer.

Advantages

• Superior optical clarity with 16-layer multi-coating for reduced flare and ghosting.
• Extremely durable: 4x stronger than conventional optical glass, resistant to scratches and impacts.
• Easy to clean: Water and oil repellent coating prevents smudges and fingerprints.
• Slim profile design prevents vignetting on wide-angle lenses.
• Enhances colors and contrast while reducing reflections for more vibrant images.

Suitable for

• Landscape photography to deepen blue skies and reduce glare from water or foliage.
• Outdoor portraits to minimize skin reflections and enhance saturation.
• Videography to control reflections and maintain consistent exposure.
• Travel and nature photography where durability and compactness are essential.

Key specifications

• Filter Type: Circular Polarizer (CIR-PL)
• Filter Diameter: 52 mm
• Series: HD MkII
• Optical Construction: Chemically Hardened Optical Glass
• Coating Layers: 16-layer (8 per side)
• Coating Properties: Anti-reflection, Water-repellent, Oil-repellent, Scratch-resistant, Anti-static
• Light Transmission: High (99.7% average)
• Filter Factor: 2.5-5x (approx. +1.3 to 2.3 stops)
• Frame Material: Lightweight Aluminum
• Frame Profile: Low-profile / Slim
• Front Filter Thread: Yes, 52mm
• Application: Photography, Videography

Recommendations

For best results, pair this filter with a lens hood to minimize stray light. When stacking with other filters, use a step-up ring to avoid vignetting. Clean with a microfiber cloth and lens cleaning solution to maintain the coating's performance.