Introduction: By rotating the end of the lens you are able to control the amount of light (between +1 and +8 stop values) that enters the lens. Foe example, f/4 instead of f/8 for selective sharpness instead of great depth of field, or 1/15s instead of 1/60s for a smooth, blurred water effect instead of a ‘frozen’ waterfall. Color Shift? The color of the image may vary between warm and cold. This is a common phenomenon of all variable ND filters. You need to asjust your white balance accordingly when set the ND filter to different ranges. Lens Cap or Lens Hood Do Not Fit This Filter? The outside thread is larger than the inside one, which is our special design.The wider front filter ring helps reduce the possibility of vignetting (the darkening of corners) at wide angle. If you still want to mount lens cap, you will need to take the filter off or use a lager thread cap instead. What's In the Box? 58mm HD ND2-400 x 1
Double Thread, 18-Layer super anti-reflection multi-coated with EVERCLEAR 5(WATER REPELLENT / ANTI-OIL / ANTI-DUST / ANTI-SOIL / SCRATCH RESISTANT) Coating Technology to withstand almost any conditions With Zomei Variable Density Neutral Gray filters, users can select the intensity from ND2 (1 f-stop) to ND400 (8+ f-stops) by rotating the front ring Nearly zero distortion when light go through this HD filter. With only 6.8mm thickness and made with no compromise, this Variable ND X Filter might be the thinnest and the best in the world Original SCHOTT Glass from Germany, Compare B+W All Materials Used in this filter Meet the Requirements of European Union's standards of Environ Ment Protection-ROHS(Restrictions on Hazardous Substances)