Vivitar VIV-7MM-P 7mm F3.5 Fisheye Lens for Pentax<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"> Aperture range of F/3.5 ~ 22 </span></li><li><span class="a-list-item"> 10 Elements in 7 groups </span></li><li><span class="a-list-item"> Built-in petal type hood </span></li><li><span class="a-list-item"> 180 degrees angle of view </span></li><li><span class="a-list-item"> Includes removable lens hood， lens caps， lens pouch， instruction manual， and 1 year Vivitar warranty </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/01H%2ByULHuNL.jpg" noproxy>