A bit of exotica for sale, the Leica R APO-Telyt Modular….. Both heads with 1.4x and 2x focussing adaptors. The 1.4x was adjusted by Solms to focus ‘to infinity and beyond’ so that infinity could be reached when mounted on a Leica S body. Not cheap 😉 https://johnmcmaster.com/ForSale/APO-Telyt_Modular john