Description: 1. 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. 2. Zomei U-HD FADER ND gray is adjustable between 2-400, unbiasde color,without the"+"sign. 3. Double Screw 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. 4. With only 6.8mm thickness, this Variable ND X Filter might be the thinnest and the best in .
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