Neutral density camera filter 52 mm — Calumet CALSAN0452, 1‑pack, black/transparent

The Calumet CALSAN0452 is a 52 mm neutral density (ND) camera filter supplied as a single unit. This ND filter reduces incoming light uniformly to enable longer exposures, wider apertures and motion blur control without affecting color balance. The glass is treated with 28 multi-layer coatings to preserve image quality and resist reflections, scratches and water, while the slim black mount minimizes vignetting on wide-angle lenses.

Advantages

The 52 mm Calumet ND filter delivers predictable light reduction for controlled shutter speeds and aperture use in bright conditions. Multi-layer coatings improve contrast and color neutrality while providing water-repellent and scratch-resistant surfaces. The ultra-slim design reduces the risk of vignetting on wide-angle lenses and allows use with stacked thin filters or close-focus lens setups.

Suitable for

• Landscape long-exposure photography (waterfalls, rivers, clouds)
• Portraits with shallow depth of field in bright light
• Video production requiring natural motion blur and controlled aperture
• Architectural and urban scenes where moving elements should be softened or removed

Key specifications

• Filter type: Neutral Density (ND)
• Filter factor: ND4x / ND8x / ND16x line available; this product is the 52 mm ND variant
• Thread size: 52 mm
• Mount color and finish: black slim mount
• Coating: 28 multi-layer coatings (anti-reflective, water-repellent, scratch-resistant)
• Optical effect: uniform light reduction for longer exposures and wider apertures
• Unit: single filter (1 piece)

How to use

Attach the filter by screwing it onto a lens with a 52 mm front thread until it is secure but not overtightened. Use the ND filter to reduce the amount of light entering the lens when you need slower shutter speeds or wider apertures in bright conditions. Compose and meter normally; then adjust shutter speed and aperture to achieve the desired motion blur or depth-of-field effect. When stacking filters, be aware of potential vignetting on very wide-angle lenses despite the slim mount.

Usage recommendations

For long-exposure landscape work, use a tripod and a remote shutter release or camera timer to avoid camera shake. When shooting video, set shutter speed according to the desired motion cadence (for example, double the frame rate) and use the ND filter to keep aperture and exposure consistent. Clean the coated surfaces with a soft microfiber cloth and appropriate lens cleaner to maintain coating performance and water repellency.