Panasonic G Vario 100-300mm f4-5.6 Power O.I.S. 4x4 6 ED AI-S Nikkor is

6 ED AI-S Nikkor is a big lens

used to shoot tons of classic B&W movies and generally available today only in motion picture reel sizes

and you can swap them in seconds with a clever magnetic attachment system

The Freewell magnetic filter system starts with a slim magnetic filter holder that threads into your lens- in this case

Panasonic G Vario 100-300mm f4-5.6 Power O.I.S. 4x4 6 ED AI-S Nikkor isThe Panasonic G Vario 100 300mm f4 5. 6 Power O. I. S. is a telephoto zoom lens for Micro Four Thirds that provides a whole lot of magnification the full frame equivalent of 600mm in a lens that's only 14cm long. In excellent condition, with clean glass and good function. Includes hood.