Firecrest ND 77mm Neutral density ND 3.9 (13 Stops) Filter for photo， video， broadcast and cinema production<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Firecrest technology is neutral across the whole spectrum， including UV， visible and infra red </span></li><li><span class="a-list-item"> 77mm diameter stackable filter reduces light by 13 F-stops </span></li><li><span class="a-list-item"> Firecrest multicoating technology makes the filter hydrophobic and scratch resistant </span></li><li><span class="a-list-item"> Manufactured in the UK using Schott Superwite glass， the finest optical glass available </span></li><li><span class="a-list-item"> Specialised ultra high density filter designed for long exposure photography </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Sab6NuMbL.jpg" noproxy>