-【1-5 Stops ND2-ND32 Variable】K&F Concept ND2-ND32 variable filter is intended for long exposure and motion blur techniques in changing light. Reduces light intake from 1 to 5 stops without affecting color balance, suitable for mid-day or mild sun conditions. - 【18 Layers of Nano Coated Optical Glass】This ND2-ND32 variable filter, of K&F Concept Nano D series, is made by HD AGC optical glass, a total of 24 multi-layer coatings help repel water and dust, effectively reducing reflection from the filter itself and glare.The surface of the lens is oxidized and sandblasted to effectively prevent stray light from entering and slow down the reflection of the metal surface. -【Ultra-thin Frame】For the K&F Concept ND2-ND32 variable filter designed with an ultra-wide-angle design, the ultra-slim frame is only 7.4mm and the surface is designed with CNC trapezoidal pattern. Helps increase friction over a large area when rotating, making it easy to install/remove lenses and other accessories. -【No Vignetting】Due to different lens types and focal lengths, the filter may appear a black "X" cross, but with continued rotation, the shadow will disappear naturally, which is a natural physical phenomenon caused by the rotation of the adjustable ND lens. -【Choose Right Size】This ND2-ND32 variable filter from K&F Concept is compatible with all 46mm lenses. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "ø" (diameter) symbol.