A Magnetic Adapter Ring is essential for using Mark II Magnetic Filters. Click here to learn more. World's Most Color Neutral ND. The X4 ND features SCHOTT Superwhite B270® optical glass, which is an ultra clear crown glass. It is produced by melting high purity raw materials and then made using the continuous draw process. The resu...
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Great customer service. Fast shipping. Packaged very well. Feels like high a quality product. Did a short test and it works as described.