Up to 400 Slim Fader Variable Adjustable ND Neutral Density 40,5 Mm : Varable Neutral Density Fader that uses the amount of light with a standard twist neutral quality (ND) can achieve light effects without significant color change Application: Classic NDs have different numbers generating and generating gear way, which can be used for different shooting parameters, depending on screen ratio, waterfalls, stream, waves, etc. Function: 1 Neutral density can be typical with up to ND400it is a way to create different neutral frequency by rotating from 2 to 8 stops 2 Apply shutter speed under the load of exposure to sunlight 3 Large aperture is available for early field depth creation 4 index on the edge to adjust the squeeze Specification: ring: red Rotating: yes. high-energy neutral: 2 - 400 Size: Diameter (for lens) Thickness: 1 cm Material: Aluminum Alloy Glass material: optical glass contains: 1 x Silencer