Lensbaby Composer Pro with Sweet 50 Optic for Micro Four Thirds<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， f/2.5 </span></li><li><span class="a-list-item"> Internal aperture controlled by a ring on the front of the optic </span></li><li><span class="a-list-item"> Refined metal ball design delivers ultra-smooth focus and tilt control </span></li><li><span class="a-list-item"> Minimum focusing distance 15” </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/516INKh1MWL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41yCyplSU8L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31eIn6HimXL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41I6w67Fj0L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41oL1hQfTIL.jpg" noproxy>