The ProMaster Digital HGX Variable Neutral Density Filter variable neutral density filter providing light reduction of about 1.3 to 8.6 stops. The ND3 to ND400 density creates a darkening of the entire image, allowing you to photograph with a wider a
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perture or slower shutter speed than normally required. <div>ProMaster Digital HGX filters are the most advanced optical filters available today for digital photography featuring:</div><div><ul><li>Next Generation Digital Anti-Reflection
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Multi Coating – Specially formulated to minimize internal reflections created by CCD and CMOS sensors in a digital SLR.</li><li>REPELLAMAX™ Element Resistant Coating – This EXCLUSIVE PROMASTER coating repels moisture, fingerprint
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s, dust, dirt, and grime to ensure the sharpest images possible</li><li>Hardened Optical Glass – Ultra hardened optical glass resists surface scratching and stands up to the most intensive use.</li><li>Low Profile Anti-Reflective Frame &nda
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sh; Ultra thin low profile frame helps prevent vignetting on super wide digital format lenses. The satin-like smooth finish helps to minimize reflected light.</li><li>Black Rimmed Glass – The outer rim of the filter glass is treated with a sp