B+W 40.5mm HTC Kaesemann Circular Polarizer with Multi-Resistant Coating<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"> New generation of Kaesemann High Transmission Circular Polarizer with 1 - 1.5 f-stop loss. Before up to a 3 stop loss. </span></li><li><span class="a-list-item"> This filter uses our standard B+W F-Pro filter mount， which has a front accessory thread and is made of brass. 24mm full frame lens use. </span></li><li><span class="a-list-item"> MRC by B+W is not only an extraordinarily effective multiple layer coating， it is also harder than glass. It protects filters from scratches， and it is also water and dirt repellent， thus facilitating filter maintenance. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41yg%2B7RvqSL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51oK1iSn4iL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51v1KHwIn-L.jpg" noproxy>