Pentax DA 40mm f/2.8 Limited Edition Silver

PENTAX KAF MountEquivalent focal length to 60mm in the 35mm format with *ist D/DSThe image circle is designed to match the CCD used in PENTAX digital SLRsUltra-compact pancake-type design weighs just 3.2 oz.Exceptional high contrast, high resolution optics with minimal aberrations
Product DescriptionUltra-thin 40mm lens for PENTAX digital SLRs Designed for exclusive use with PENTAX digital SLR cameras, this unique pancake style standard lens measures a mere . 59 inches in length and weighs

Source: Digital Camera and Video Store...