The PMLA-EP01 Macro Lens Adapter attaches the PTMC-01 macro lens to the fixed flat port of the PT-EP01 housing. This housing is for the PEN E-PL1 digital camera, and the macro lens is designed to be used with the Zuiko ED 14-42mm or 9-18mm lens. The macro lens allows you to get close to small subjects. Working close underwater will improve your photos by increasing contrast and colour saturation.