PENTAX Limited lens pancake lens standard single-focus lens HD PENTAX-DA40mmF2.8 Limited Black K mount APS-C size 21390<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"> 40 mm focal length </span></li><li><span class="a-list-item"> (Telephoto end) 61 mm focal length </span></li><li><span class="a-list-item"> F value (wide-angle side) 22 F value (telephoto end) 2.8 </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41daJLrE9RL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51hpb1n1soL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41LVWJYvvVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Tp1lXywnL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BXJlu%2B1%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41wjaP8iEaL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/417OWK5FxRL.jpg" noproxy>