Solar ND100000 Eclipse Filter K&F Concept for Photography — 58 mm Thread

The K&F Concept Solar ND100000 Eclipse Filter for 58 mm thread is a specialized neutral density filter engineered for safe direct imaging and observation of the Sun. With an attenuation factor of ND100000, this filter significantly reduces incident solar radiation to levels appropriate for photographic sensors and visual observation when used with compatible camera lenses or eyepieces that accept a 58 mm screw-on filter. It is intended for use during solar eclipses, sunspot imaging, and other daylight solar photography where extreme light reduction is required for correct exposure and sensor protection.

Advantages

This solar filter provides very high attenuation with an ND100000 factor, enabling correct exposure of the solar disk and surface details while protecting camera sensors and optics from excessive light and heat. Its standard 58 mm screw thread allows direct mounting onto lenses or adapters without additional holders for many photographic setups. The construction ensures a uniform darkening effect across the aperture to minimise vignetting and maintain even image quality when framed correctly.

Suitable for

• Photographing solar eclipses with DSLR or mirrorless cameras fitted with 58 mm thread lenses or step-up/step-down adapters
• Solar disk and sunspot imaging at low to medium magnifications
• Visual solar observation through compatible optical instruments that accept 58 mm screw-on filters

Key specifications

• Filter type: Neutral density solar filter (high attenuation)
• Attenuation factor: ND100000 for extreme light reduction
• Mount type: 58 mm external screw thread compatible with standard filter threads
• Primary use: Direct solar photography and observation

How to use

Before attaching the filter, ensure the lens or adapter with a 58 mm thread is clean and free of debris. Screw the filter securely onto the front of the lens or compatible adapter until fully seated; avoid cross-threading. Compose and focus using live view or a viewfinder with the filter in place—exposure settings will require significant reduction compared to ordinary daylight; start with manual settings appropriate for a highly attenuated light source and adjust as needed. Do not remove or install the filter while pointed at the Sun without protective eyewear and ensure the camera body or viewfinder is not directly exposed to intense sunlight for prolonged periods.

Usage recommendations

Use the filter only on lenses or adapters that match the 58 mm screw thread specification and only for intended solar imaging tasks. Verify secure mounting before pointing equipment at the Sun. Avoid using the filter with optical viewfinders without taking precautions to prevent eye exposure—prefer electronic live view for framing and focusing. Store the filter in a protective case when not in use to prevent scratches and contamination that could affect attenuation performance.