Nikon AF-S FX NIKKOR 50mm f/1.4G Lens with Auto Focus for Nikon DSLR Cameras with Tiffen 58mm Protection Filter<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"> 50mm focal length， 75mm equivalent focal length on DX cameras </span></li><li><span class="a-list-item"> F1.4 maximum aperture; F16 minimum </span></li><li><span class="a-list-item"> Optimum protection for camera lenses without color shift or reflective glare </span></li><li><span class="a-list-item"> Protects against dirt， grime， fingerprints， and bumps </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41r1tN9TJBL.jpg" noproxy>