Pentax K-Mount HD DA 40mm f/2.8 40-40mm Fixed Lens for Pentax KAF (Limited Black)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="" 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"> Standard， 40mm focal length (60mm in 35mm film format) </span></li><li><span class="a-list-item"> Ultra-thin， pancake design， available in two colors </span></li><li><span class="a-list-item"> 9 blade diaphragm for stunning bokeh </span></li><li><span class="a-list-item"> Quick-Shift Focus System </span></li><li><span class="a-list-item"> Unique super-compact design in two colors </span></li><li><span class="a-list-item"> Lens not zoomable </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41gUG%2BJHdUL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41daJLrE9RL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41UTN2vouCL.jpg" noproxy>