It happens only few times in the year to find this very rare lens. And it happens even less times to find it in top conditions, with all caps and already a T-mount adapter included. It’s the Canon 50mm f/0.75 you can find right now on eBay US (Click here). Unlike some other f/.075 lenses like Carl Zeiss (f/0.7 used by Stanley Kubrick), De Oude Delft, Rayxar this is a proper camera lens (the others are X-ray lenses or in case of the one used by Kubrick a limited edition NASA lens). The lens is 2/3 stops faster than the Voigtlander 0.95 MFT lens series. This is the fastest lens you can use on your Micro Four Thirds camera!