K&F Adjustable Neutral Density Filter ND3–ND1000 43mm (Full) K&F01.2056

The K&F Adjustable Neutral Density Filter ND3–ND1000 43mm (Full) is a variable neutral density filter designed for lenses with a 43mm front thread. It provides continuous light reduction across a wide range, enabling longer exposures and greater control over depth of field in bright conditions. The filter is intended for photographers who need to limit incoming light without altering color balance, allowing creative techniques such as motion blur, smoothing water, and using wide apertures outdoors.

Advantages

This full neutral density filter offers an adjustable density from ND3 to ND1000, giving precise control over exposure time and aperture selection. Its 43mm threaded mount ensures compatibility with lenses that accept standard 43mm filters, and the optical glass construction maintains image clarity while reducing stray light. The continuous adjustment mechanism allows seamless transitions between light stops for flexible on-the-spot exposure management.

Suitable for

• Long-exposure landscape photography to smooth water and clouds
• Architectural and cityscape shots requiring motion control of people or vehicles
• Portraits and outdoor shoots using wide apertures in bright light
• Creative motion blur and time-lapse sequences

Key specifications

• Filter type: Adjustable full neutral density (variable ND)
• Density range: ND3 to ND1000 (continuous adjustment)
• Mount size: 43mm threaded
• Optical material: multi-coated glass (designed to reduce reflections and maintain color fidelity)
• Function: reduces light intake for longer exposures and wider apertures

How to use

Screw the filter onto a lens with a 43mm front thread and rotate the outer ring to adjust the density to the desired level. Meter the scene or use live view to determine exposure time after applying the filter; longer exposures will require a stable tripod and remote release or timer to avoid camera shake. Check the image for color balance and vignetting at extreme settings and make incremental adjustments while observing the effect on shutter speed and aperture.

Usage recommendations

Use the filter on a solid tripod for exposures beyond handheld capability, bracket exposures when aiming for precise results, and clean lens and filter threads before mounting to ensure a secure fit. When composing, verify that the selected density does not introduce unwanted color cast; if present, correct in-camera white balance or in post-processing. Store the filter in a protective case when not in use to prevent scratches and dust accumulation.