Lensbaby Composer for Nikon F Mount SLR's - with Lensbaby Optic Box Set Bundle for Composer, Muse, & Control Freak - Lensbaby Accessary Kit Bundle with 0.6X Wide Angle / 1.6X Telephoto Macro Kit, & Creative Aperture Kit Ships with the Double Glass optic installed (a multi-coated optical glass doublet) Features the Lensbaby Optic Swap system Focal Length: right around 50mm Focus Type: Manual... Fingertip, actually Aperture Type: Interchangeable magnetically levitating aperture disks