[Exposure Reduction]- This variable neutral density filter is specially designed for shooting dynamic scenes, such as waterfalls, streams, waves, or any fast-moving object. It reduces the amount of light reaching the film without affecting the color to achieve the desired effect, and the longer exposure times allow for smoother water movements, shallower depth of field, and blurred motion | [Variable Fader ND Filter]- This Variable ND neutral density filter reduces the light from 1 to 9 f-stops, which effectively controls the exposure during shooting. The neutral density can be adjusted steplessly from ND2 to ND400 by rotating the upper part of the frame, which effectively solves the problem of carrying multi fixed ND filters | [Multi-Coated & Ultra-Slim Frame]- 16-Layer multi-resistant Nano Coating significantly reduces lens flare and ghosting while making the filter Anti-Scratch, Reduce Reflection, Water Repellent, Oil & Dust Resistant. The frame is made of high-quality & extra-tough aviation aluminum alloy ensuring durability, and the thickness is only 7mm, which prevents wide angle vignetting | [Choose your Size]- This Adjustable ND lens filter adopts a Double-Thread Design, which has 77mm inner thread and 82mm outer thread. It is compatible with most 77mm camera lenses. Please verify your camera's lens thread size. On all lenses from Canon, Nikon, Olympus, Samsung, Fuji, and other manufacturers there is a printed by a "ø" (diameter) symbol that determines the filter size. Moreover, this design allows you to mount 82mm thread multiple filters, lens cap, or other accessories | [Moisture-Proof Storage Case]- Comes with a delicate and portable filter case. Each neutral density adjustable filter can be fixed firmly in the case via the custom-fitted sponge cushion(except PF-NDV82 with a PP box). Moreover, the moistureproof interleaving paper and the sponge cushion at the bottom effectively protect the filter from moisture and impact