【Variable ND2-32ND & CPL Filter】One filter both has a light reduction effect and also can enhance the color and contrast. The variable neutral density filter reduces 1-5 stops of light. The CPL Function can remove unwanted glares from a non-metallic surface. Strongest effect when used at a 90° angle from the sun. | 【Ultra definition imaging】 The true color variable ND filter solved the common problem of partial yellow and color shift, showing the true color of the image and video. When the light goes through the filter, it won’t be affected by the coating and there's no color cast, even in long exposure mode. Our filters will not cause X shadow or vignetting in most usage scenarios. Please read the product instructions carefully or just contact with us if you have any question. | 【Optical Glass with Nano Coating】Made by importing ultra-white optical glass, double side 30 multi-layer coatings, the reflectivity can reach less than 0.15% to reduce flare and ghosting. Protect the filter from water, oil, dust, and scratches. | 【Aircraft Grade Aluminum Frame】Filter frame is made of aircraft grade aluminum alloy frame. It screws easily into the camera. The CNC precisely machining knurling on the mounting ring makes it easy to get snug enough to not spin off while adjusting the ND/CPL function. Simply rotate the putter to adjust from ND2 to ND32 on the frame, convenient to be sure the ND filter stops. | 【NOTE】Please verify your camera's lens thread size before ordering. Searching your lens and find the diameter symbol "Ø" followed by a number, this usually can be found on the front or side of your lens, or printed underneath the front lens cap-this magic number is your filter size. We have checked all the filters before send them out. If you fee unsatisfied in any way, please email us. We will provide you with satisfactory solutions.