ZOMEI 49mm Ultra Slim Variable Fader ND2-400 Neutral Density ND Filter Adjustable ND2 ND4 ND8 ND16 ND32 to ND400 Replacement for Sony NEX 18-55mm Lens Features: ND2-400 stepless variable light reduction, and won't affect true object color. Reduce shutter release speed when you shoot under bright light. Enable you to shoot vaporous running water, beautiful car track night scene, blue sky and white cloud in cloudy/rainy days. HD black rimmed AGC , multi-coated anti-oil and scratch-resistant. Super slim fader frame can largely reduce blocking angle when you use wide angle lens. Specifications: Brand: ZOMEI Optional Caliber: 40.5mm, 49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm, 82mm Package Size: 11 * 11 * 1.8cm / 4.3 * 4.3 * 0.7inch Package Weight:                 -40.5mm: 77g / 2.7oz                 -49mm: 80g / 2.8oz                 -52mm: 84g / 2.9oz                 -55mm: 85g / 2.9oz                 -58mm: 87g / 3oz                 -62mm: 90g / 3.2oz                 -67mm: 93g / 3.3oz                 -72mm: 100g / 3.5oz                 -77mm: 101g / 3.5oz                 -82mm: 108g / 3.8oz Package List: 1 * Fader ND Note: 1. The fader should be set between the minimum and maximum ND range, or otherwise cross spots might exist. 2. The caliber of other filters or lens cover that will be mounted on the ZOMEI variable fader should be 1 level bigger than ZOMEI fader. For example, you are using 82mm ZOMEI variable fader, then the lens cover should be 87mm.