Pentax DA 40mm f/2.8 XS Lens<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"> Designed by Marc Newson and with a profile that is .36 inches thin at 1.8oz </span></li><li><span class="a-list-item"> Fixed focal length 40mm prime lens is equivalent to 61mm in the 35mm format </span></li><li><span class="a-list-item"> Maximum f2.8 aperture is ideal for existing light photography and creative depth of field applications </span></li><li><span class="a-list-item"> Pentax SP coating protects the exposed lens elements </span></li><li><span class="a-list-item"> Pentax KAF mount is compatible with current and past K mount compatible cameras </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31C3QgmouGL.jpg" noproxy>