The square SN22 ND8 filter provides a 3 f-stop reduction, with a thickness of just 2.3mm. There is no color distortion, and it is made from high-quality Japanese optical glass.

• Double-threaded, featuring 20-layer multi-resistant coating technology that significantly reduces reflection and ghosting, while making the filter scratch-resistant, waterproof, and resistant to oil and dust, suitable for the demands of adventure photography.
• The nano-coating with metal alloy on both sides of the clear glass - this coating process produces a truly neutral image, free from infrared radiation contamination (flat curve).
• Eliminates overly bright and washed-out images, allowing for longer exposures to capture the beauty of time and motion.
• K&F Concept Neutral Density Filter 4x4" / 100mm*100mm, compatible with the Cokin Z series for DSLR lenses.