Camera Filter Set 4-in-1 K&F Nano-K UV CPL ND4 52mm

The K&F Nano-K Camera Filter Set 4-in-1 (52mm) combines three functional filter types and a protective element in a compact kit for lenses with a 52 mm thread. The set includes a UV filter for lens protection and subtle reduction of atmospheric haze, a CPL (circular polarizer) to manage reflections and increase colour saturation, and an ND4 neutral density filter to reduce light intake for longer exposures and motion blur effects. Each filter is sized for easy attachment to compatible photographic lenses and is intended for basic protection and creative control in landscape, travel and outdoor photography.

Advantages

This 4-in-1 set provides practical versatility without the need to buy filters separately: protection against dust and scratches, polarization to cut reflections from non-metallic surfaces, and light reduction for controlled exposure. The filters are lightweight and designed for quick mounting on 52 mm lenses. The CPL element improves contrast and colour fidelity in bright or reflective conditions, while the ND4 option enables exposure extension for motion effects and aperture control in bright light.

Suitable for

• Landscape photography to manage reflections, haze and dynamic range
• Travel and street photography where lens protection and quick polarisation are useful
• Outdoor portrait and product shots that require reduced glare and improved colour saturation
• Long-exposure and motion-blur effects using the ND4 neutral density filter

Key specifications

• Filter types: UV, Circular Polarizer (CPL), Neutral Density ND4, and protective element
• Mount/thread size: 52 mm compatible with lenses using 52 mm screw threads
• Construction: multi-coated optical surfaces for reduced reflections and improved light transmission
• Effect of ND4: approximately 2 stops light reduction for longer exposures
• Primary use: protection, polarization control and light attenuation for exposure control

How to use

Attach the required filter to the front thread of a 52 mm lens by screwing it on until lightly secure; avoid overtightening. Use the UV filter as a permanent protective layer to shield the front element from dust, fingerprints and minor impacts. Rotate the CPL filter while observing the viewfinder or live view to find the setting that reduces unwanted reflections or increases sky contrast. Install the ND4 filter for scenes that require slower shutter speeds; recompose and refocus as neutral density may affect autofocus and metering. Remove and store filters in a protective case when not in use to avoid scratches.

Usage recommendations

Clean filters with a soft microfiber cloth and appropriate optical cleaner. When using the CPL, check exposure and white balance, as polarisation can change apparent light levels and colour. For ND4 use on bright days, verify shutter speed and consider a tripod for stable long exposures.