Photographic Filter Kit K&F 4-in-1 95mm – Nano-K UV, CPL, ND4, NDx (SKU SB9086)

The K&F 4-in-1 95mm photographic filter kit combines four commonly used filters—Nano-K UV, circular polarizer (CPL), ND4 neutral density and a variable ND (NDx)—into a single set for 95 mm lenses. The kit is intended to reduce ultraviolet haze, protect the front element of the lens, control reflections and polarisation, and provide fixed and variable light reduction to enable longer exposures or correct exposure in bright conditions. The Nano-K coatings on the glass offer water and oil resistance and help maintain image sharpness and colour fidelity.

Advantages

The kit groups UV protection, polarisation and neutral density functions in one package, reducing the need to change filters in the field. High-precision glass combined with Nano-K surface treatments provides scratch resistance, easier cleaning and reduced flare. The circular polarizer enables contrast enhancement and reflection suppression on non-metallic surfaces, while the ND options offer both a fixed 2-stop reduction and a continuously adjustable attenuation for flexible exposure control.

Suitable for

• Landscape photography where haze reduction and long exposures are required
• Architectural photography to control reflections on glass and water
• Outdoor portraiture when managing sunlit highlights and background separation
• Long exposure shots of water, clouds and moving subjects
• General lens protection during travel and outdoor shoots

Key specifications

• Filter diameter compatible: 95 mm
• Included filter types: Nano-K UV, Circular Polarizer (CPL), ND4 (2-stop) neutral density, Variable ND (continuously adjustable density)
• Optical material: multi-coated optical glass
• Surface treatment: Nano-K coating for water and oil resistance
• Mount: screw-in thread suitable for 95 mm front threads
• Functionality: ultraviolet reduction, polarisation control, fixed and variable light attenuation

How to use

Screw the appropriate filter onto the lens front using the 95 mm thread. Use the Nano-K UV filter as a protective and haze-reducing element in front of the lens. Rotate the circular polarizer while observing through the viewfinder or live view to reduce reflections and increase contrast until the desired effect is reached. Attach the ND4 for a consistent 2-stop exposure reduction when you need moderate light reduction. For variable light control, mount the variable ND and rotate its outer ring to select the desired density; check exposure metering or use manual exposure adjustments when using strong attenuation. Remove or replace filters as needed to avoid vignetting when stacking filters and keep the threads clean to ensure proper seating.

Usage recommendations

When combining filters, test for vignetting at wide focal lengths; use one filter at a time if edge darkening appears. For long exposures with the variable ND, use a sturdy tripod and remote release or self-timer to avoid camera shake. Clean the Nano-K coated surfaces with a blower and microfiber cloth; avoid abrasive cleaners to preserve the coating. Check composition and exposure in live view after applying polarizers or dense ND settings, as metering behaviour may change.