Oshiro 500mm f/6.3 LD UNC AL Super Telephoto Lens for Panasonic Lumix DMC GM5, GH4, GM1, GX85, GX8, GX7, GF6, G7, G6, GH3 G1, GH1, GF1, G10, G2 GH2 and GF2 Digital Cameras 500mm f/6.3 achromatic refractor telephoto lens Extra-low dispersion element is incorporated within the 4 element, 4 group design, and helps to reduce chromatic aberrations for sharper image quality Manual focus design is complemented by both depth of field and distance scales for utilizing pre-focusing techniques Built-in tripod mount and removable lens hood helps reduce stray light to prevent lens flare and ghosting All-metal body and mount