Product description

K&F Concept 77mm Variable Filter ND4-ND64 & CPL 2-in-1 Lens Filter

Control exposure and unwanted reflections with one versatile camera lens filter. The K&F Concept Variable ND4-ND64 & CPL Filter combines variable neutral density and circular polarising functions in a single filter, providing photographers, videographers and content creators with convenient control over light, glare, reflections, colour and contrast.

With 2-6 stops of adjustable light reduction, the filter can be varied from ND4 to ND64 to suit different lighting conditions. It is designed for lenses with a 77mm filter thread and combines optical glass with a multi-coated surface and durable aluminium ring.

2-in-1 Variable ND and Circular Polarising Filter

Combining two useful photographic filter functions into one design means there is no need to stack separate ND and CPL filters. The variable ND function reduces the amount of light entering the lens, while the circular polariser helps control unwanted glare and reflections from non-metallic surfaces such as water and glass.

The CPL function can also help enhance colour and contrast in suitable scenes, making the filter particularly useful for landscape photography, travel, outdoor shooting and video production.

ND4-ND64 Variable Light Control

The adjustable ND4-ND64 range provides approximately 2-6 stops of exposure reduction. This allows the amount of incoming light to be changed by rotating the filter rather than repeatedly swapping between different fixed-strength ND filters.

For photography, the additional exposure control can help when using slower shutter speeds or wider apertures in bright conditions. For video, it provides a convenient way to manage exposure while maintaining preferred shutter speed, aperture and ISO settings as available light changes.

Designed to Help Prevent X-Cross Patterns

The frame uses a controlled rotational design with defined minimum and maximum positions. By limiting adjustment to the intended ND range, the design helps avoid the unwanted dark X-shaped cross pattern that can occur when some variable ND filters are rotated beyond their usable range.

Quick Adjustment with Control Lever

An integrated control lever makes it easier to rotate the filter and adjust the amount of light reduction while shooting. Clearly defined positions between minimum ND4 and maximum ND64 provide quick visual reference when changing exposure.

The CNC-machined aluminium ring features a non-slip design for easier handling when fitting, removing and adjusting the filter.

Multi-Coated Optical Glass

The filter is manufactured from optical glass with multi- and resistance-coated surfaces. The coating helps reduce unwanted reflections while providing additional protection to the glass surface during regular photographic use.

The aluminium ring also features an oxidation sandblasted finish designed to help minimise unwanted stray-light reflections from the frame.

Variable ND Filter for Photography and Video

The adjustable light reduction makes this filter particularly useful for photography, filmmaking, videography, vlogging and content creation. Exposure can be adjusted without repeatedly removing and replacing filters, making it easier to respond to changing outdoor lighting.

For photographers, it provides additional creative control over shutter speed and aperture in brighter conditions. For videographers, variable light reduction can help maintain preferred exposure settings when moving between different lighting environments.

Ideal for Landscape and Outdoor Photography

The combination of neutral density and circular polarisation makes this a practical choice for landscapes, travel, nature and general outdoor photography. The ND function provides greater exposure control, while the CPL function helps manage reflections from non-metallic surfaces and can enhance colour and contrast in suitable scenes.

Lens Compatibility

This filter has a 77mm rear mounting thread and is designed for camera lenses with the corresponding filter diameter. Compatibility is determined by the lens filter thread rather than the camera brand or lens mount.

Before ordering, check the front or side of your lens for the diameter symbol Ø followed by its filter size. The filter diameter must match the rear mounting thread of the filter.

Key Features

• 2-in-1 variable neutral density and circular polarising filter
• ND4-ND64 adjustable neutral density range
• 2-6 stops of variable exposure reduction
• CPL helps reduce glare and reflections from non-metallic surfaces
• Helps enhance colour and contrast in suitable scenes
• Controlled rotation designed to help prevent X-cross patterns
• Integrated control lever for quick adjustment
• Multi- and resistance-coated optical glass
• CNC-machined aluminium filter ring
• Oxidation sandblasted frame finish
• Suitable for photography, filmmaking and video

Specifications

• Brand: K&F Concept
• Series: Nano-X
• Filter Type: Variable ND with Circular Polariser
• ND Range: ND4-ND64
• Exposure Reduction: 2-6 Stops
• Filter Material: Glass
• Coating: Multi- & Resistance-Coated
• Ring Material: Aluminium
• Mount Type: Screw-In

 

Frequently Asked Questions

What does an ND4-ND64 variable ND filter do?
It provides approximately 2-6 stops of adjustable light reduction, allowing greater control over exposure in bright or changing lighting conditions without having to swap between multiple fixed ND filters.

What is the CPL function used for?
The circular polarising function helps reduce unwanted glare and reflections from non-metallic surfaces such as water and glass. It can also improve colour and contrast in suitable outdoor scenes.

Is this filter suitable for video?
Yes. Variable light reduction is particularly useful for filmmaking and video because exposure can be adjusted while retaining preferred camera settings such as shutter speed and aperture.

Will it fit Canon, Sony, Nikon, Fujifilm or Panasonic cameras?
Compatibility depends on the lens filter thread rather than the camera brand. Check the diameter marking on your lens and make sure it matches the 77mm rear mounting thread of this version.

Is it suitable for landscape photography?
Yes. The combination of variable light reduction and circular polarisation is useful for landscapes and outdoor photography where photographers may want greater exposure control while also managing glare and reflections.