TIANYA Fader ND from ND2 to ND400 82mm Variable Neutral Density Filter with NANO COATING• Offers 2 - 8 Stops of Neutral Density; • No Need to Carry Separate ND Filters; • Rotates to Whatever Density You Need; • Good for Blurring Motion; • Holds Optical Quality at All Settings; • Excellent for Selective Focus; • Fast and Easy to Use; • Easier to control Flash output; • Allows the use of a large aperture under bright settings; • Create a slow shutter speed under heavy sun light.https://www.youtube.com/watch?v=Jp353Q_P04cSPECIFICATIONS: The 82mm Fader ND Filter from Tianya is a remarkable tool to have on hand. With one filter, you can dial in the degree of neutral density that suits your need. No more having to buy multiple ND filters and lugging them around in your gear bag. The cost-effectiveness of this filter is self-evident. Neutral density filters offer you some exciting possibilities for creating images that would ordinarily not be possible with the proper filtration. For those who enjoy blurred or motion images, this is the filter of choice since it allows you to slow down your exposure and "capture" the motion of flowing water or speeding cars, birds or athletes.Neutral density filters reduce the amount of light reaching the film. When used with a digital camera, you can effectively see how this filter works. After the initial exposure, you can check your LCD image and then make whatever change in exposure you feel you need to enhance your image. By rotating the ring, you can either increase or decrease the ND effect. This will be especially useful when trying to achieve "blurred" or "panned" shots.Neutral Density Filters HAVE FOUR MAIN USES: 1. To enable slow shutter speeds to be used, especially with high speed films, to record movement in subjects such as waterfalls, clouds, or cars 2. To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background 3. To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situation 4. To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure.PACKAGE CONTENT: 1pc 82mm Fader ND Filter, back thread 82mm (to lens) - front thread - 95mm (to lens cap or other filter attachments)