K&F Concept 67mm Magnetic ND1000 Lens Filter - 10-Stop Long Exposure

In this review the K&F Concept 67mm Magnetic ND1000 Lens Filter is judged on build, convenience and optical neutrality; it is aimed at photographers who want a simple way to create long exposures without color cast or complex adapter rigs. The single biggest reason to buy is the magnetic 1 second swap system paired with Japanese AGC glass and 28 multi-layer coatings, which together deliver reliable 10-stop light reduction and surprisingly clean colors for landscape and creative motion work.

Key Features

• Magnetic 1 Second Swap: A magnetic basic ring and matching filter let the filter snap on instantly for fast changes in the field.
• 10 Stops Light Reduction: The ND1000 density enables very slow shutter speeds to smooth waterfalls, clouds, and traffic trails without changing aperture or ISO dramatically.
• Imported AGC Glass: Optical Japanese AGC glass maintains image sharpness and avoids noticeable color cast for accurate tones.
• 28 Multi-Layer Coatings: Nanometer coatings on both sides reduce flare and ghosting while adding water and scratch resistance.
• Ultra-Slim Metal Frame: The 5.3mm CNC aluminum-magnesium alloy frame is thin to avoid vignetting on wide-angle lenses and provides a non-slip grip.

Who It's For

The filter is well suited to landscape photographers, travel shooters and videographers who need reliable long exposures and fast field changes; the magnetic ring is particularly useful when switching filters quickly or stacking with other magnetic elements. Its neutral balance and anti-reflective coatings make it a good choice for those who care about color fidelity during long exposures.

It is less appropriate for photographers who require variable ND control, or for those who need sizes other than 67mm without step-up rings; also, if a non-magnetic screw-on system is preferred for very heavy filter stacks, another style may be better.

Pros & Cons

Pros

• Strong magnetic attachment makes swapping filters fast and repeatable in the field.
• True 10-stop reduction for long exposure effects while keeping images sharp and neutral.
• High-quality AGC glass with 28 coatings reduces flare and resists scratches and water.

Cons

• Only available in fixed 67mm size here, so users with other thread diameters need adapters or other sizes.

Specifications

Our Verdict

For photographers who want dependable 10-stop long exposures with minimal fuss, this magnetic ND1000 is a smart, good-value choice; the fast magnetic swap, neutral AGC glass and extensive coatings make it especially useful for landscape and creative motion work where color fidelity and ease of use matter.

Frequently Asked Questions

Will this cause color cast?
The imported AGC glass and 28 multi-layer coatings are designed to preserve neutral color balance and most users report minimal to no color cast.

Does it vignette on wide-angle lenses?
The ultra-slim 5.3mm frame is intended to avoid vignetting on wide-angle and telephoto lenses, though very extreme wide-angle setups should be checked on a case-by-case basis.

Can I stack other filters with it?
The magnetic attachment is strong and users have reported successful stacking, but stacking multiple thick filters can reintroduce vignetting or mechanical clearance issues.