Neutral Density Solar Filter K&F Concept ND100000 for Eclipse Photography, Screw-in 67 mm

K&F Concept ND100000 Neutral Density Solar Filter is a screw-in 67 mm filter designed for safe eclipse and solar photography. With an extreme optical density equivalent to ND100000, the filter drastically reduces incoming light to levels suitable for imaging the Sun, suppressing flare and preventing sensor overexposure. The threaded design fits lenses and telescopes with a 67 mm filter thread, enabling both handheld and mounted use for capturing solar discs, partial eclipses, and sunspots with improved contrast and detail.

Advantages

The filter provides very high light attenuation specifically for solar imaging, allowing cameras to record solar features without risking sensor damage from excessive brightness. Its screw-in 67 mm mount ensures a secure mechanical connection to compatible lenses or telescopes and maintains optical alignment. By reducing stray light and flare, the ND100000 filter improves contrast and helps preserve fine solar details in photographs. The glass and coating construction is designed to deliver uniform attenuation across the image field.

Suitable for

• Solar eclipse photography (partial and annular where appropriate)
• Imaging the solar disc and sunspot observation
• Use with camera lenses and telescopes that accept 67 mm threaded filters
• Handheld or tripod-mounted solar shooting

Key specifications

• Filter type: Neutral density solar filter (high optical density)
• Light reduction: ND100000 level (extreme attenuation for solar imaging)
• Mount/thread size: 67 mm screw-in
• Compatibility: Designed for photographic lenses and telescopes with 67 mm filter thread
• Primary function: Reduce exposure, minimize flare, improve solar contrast

How to use

Attach the filter by carefully screwing it into the front filter thread of a lens or telescope that accepts 67 mm filters. Ensure the filter is securely seated and that the optical surfaces are clean before pointing the instrument at the Sun. Use live view or electronic viewfinder to compose and focus; avoid direct eye viewing through an optical viewfinder when the filter is not properly installed. Adjust camera exposure settings (shutter speed and ISO) to obtain a detailed, non-saturated solar image while checking for any vignetting or alignment issues.

Usage recommendations

Always verify the filter is undamaged, free of cracks or pinholes, and properly seated before any solar observation. Never look directly at the Sun through an unfiltered optical instrument. For critical solar work, use a secure mount or tripod and bracket exposures to capture different detail levels while maintaining safe handling practices for the equipment.